Dr. Martin Skrodzki

Here in Europe, the GDPR protects students and their data against usage of AI. At a university of Eindhoven, a professor recently uploaded student data to OpenAI and the resulting backlash was substantial.

New JHM is out. As always, #mathart and #mathgame and #mathforsocialjustice in abundance. Plus history, proofs and more. scholarship.claremont.edu/jhm/

Join us in building a strong Network of Assistant Professors in the Netherlands!

If you are an Assistant Professor or equivalent in the Netherlands, we invite you to join APNet, a vibrant community created by and for Assistant Professors across the Netherlands. (1/4)

ap-net.nl/register/

Hands-on #illustratingMath, love it 🤩 Even better, it's so easily extended into a student activity: They pick their own favorite function and build corresponding models with, e.g., cardboard. Creates a lovely gallery in the classroom.

MATH & ART AT CIRM WITH JEAN-MORLET CHAIR DAVID GAY (University of Georgia - Chair Jean-Morlet 2025, SEMESTER 2) & AN ALEXANDER ZUPAN'S ILLUSTRATION (University of Nebraska-Lincoln).

A single-line drawing that is simultaneously an open knight's tour of a 99x99 chessboard and a 3x3 Latin square.

It was great to have you and even greater to have your and your group's take on how to go further. Humor is a great way to keep us all attentive for the deeper messages beneath, so: well done, Sir!

Indeed, that would be great. If you join us on our discord, @trivial.bsky.social, you can surely get some great cover images. An invite link to the discord server is on our homepage illustratingmath.org

A large group of approximately fifty people poses for a commemorative photo outside the brick entrance of the "Institut Henri Poincaré." They are arranged in several rows, with some people sitting or kneeling in the front and others standing on the steps. A small informational sign on a stand is visible to the left. Photo: Fabrizio Scapin.

Thanks to supporters: @sorbonneparis1.bsky.social, @cnrs.fr, Fondation Sciences Mathématiques de Paris, Institut Henri Poincaré, Centres d'Accueil et de Rencontres Mathématiques INternationales, Clay Math Institute, @euromathsoc.bsky.social, @simonsfoundation.org, Qube Research & Technologies. (4/4)

A close-up shot of a chalkboard filled with handwritten notes in white chalk. Under the heading "Steps forward," the list includes items such as "Journal," "Math Repository," and "Online Encyclopedia."

The final session is dedicated to "Steps forward" for the field of #illustratingMath. What are the tangible next activities that we can pick up as a community? Suggestions include a dedicated journal, a tool collection, and an online archive, among others. (3/4)

Lael Edwards-Costa stands at a podium in a lecture hall, gesturing with one hand toward a large projector screen. The screen displays a complex, spherical geometric pattern in white and orange.

Darío Alatorre stands at the back of a lecture hall stage, looking toward a large projector screen. The screen shows a Soundcloud page (https://on.soundcloud.com/qMK3TJ2jd6Lh4yGGGt) featuring an audio track and a black-and-white geometric pattern depicting the Hilbert curve.

Claudia Silva stands in front of a chalkboard in a lecture hall. Above them, a projector screen displays a blue and white intricate geometric tiling pattern showing the hat tile in bold, white lines, overlayed with teal drawings reminiscent of mandala designs.

In the afternoon, we had another session of "art critiques". This time, we heard from Lael Edwards-Costa (Fractacls on a Sphere), Darío Alatorre (Math through sound), Érika Roldán (⚽️+Math www.youtube.com/watch?v=4CDW...), and Chaim Goodman-Strauss (themagictheorem.com). (2/4)

A person stands at the front of a lecture hall speaking into a microphone. They are joined by four other people standing in front of a large chalkboard. A projector screen above displays a slide with a definition for "Illustration (approx.)."

A close-up view of a white tabletop covered in various geometric paper models and templates. In the background, two people sit at the table, engaged in a conversation while working with the materials.

Tim Reinhardt, wearing a scarf draped over their head, speaks into a microphone in a lecture hall. Behind them, a projector screen shows six circular diagrams containing various densities of purple dots, labeled $S_1$ through $S_{100}$.

Six people stand and kneel in front of a chalkboard, smiling and holding up a large, complex white paper sculpture made of interconnected hexagonal shapes. The sculpture has various words written on its facets.

Friday was the final day of our "Rigorous Illustrations" conference at the Institut Henri Poincaré. First, we heard results from the working groups, some in the form of theater performances, some with hyperbolic mind maps; all concerning how to move #illustratingMath forward. (1/4)

Teaching with #illustratingMath and #MathArt elements, that's amazing! Looking forward to seeing what happens during the next six days 🤩

Good job, looking forward to reading it! 🥳

Thank you for the recommendation, I'll check it out.

A photograph of Steve Trettel giving a presentation in a lecture hall. He is standing to the right of a large blackboard, wearing a black sweater and a cap, and holding a microphone. The projection screen behind him shows a high-quality 3D digital rendering of various colorful geometric shapes, including spheres, polyhedra, and a complex glass-like Klein bottle structure. On the blackboard, some mathematical equations like $A\vec{x} = \lambda\vec{x}$ are visible.

A photograph of Elliot Kienzle presenting in a lecture hall. They are wearing a white coat with a bold red and yellow floral pattern and holding a microphone. The projection screen displays a stylized, hand-drawn scientific illustration of a purple, segmented anatomical or biological form with labels such as "Bun G," "Whittaker sheaf," and "cotangent fibers".

A photograph of Jayadev Athreya speaking into a microphone in a lecture hall. He is wearing a dark hoodie and glasses, standing in profile. Above him, a wall-mounted monitor displays a bright, repeating geometric tessellation pattern in vibrant shades of green, yellow, purple, and blue.

A photograph of Sam Fairchild giving a presentation. She is standing by a wooden desk, wearing a patterned dress and a grey cardigan, pointing toward a large projection screen. The screen shows a grid of six circular and square panels containing intricate, high-contrast mathematical patterns and blue-tinted visualizations. The blackboard behind her contains several hand-drawn diagrams and a numbered list of "Observations" and "Explanations".

Before going into the group discussions, there is the second-to-last #art critique session of the conference. Today, we get to look at and discuss some art by @stevejtrettel.bsky.social, Elliot Kienzle, Jayadev Athreya, and Sam Fairchild. All beautiful examples of #illustratingMath. (3/3)

A group of people are gathered around a white counter during a break. On the counter, several small, white 3D-printed geometric structures are scattered. A woman in the foreground on the left holds a cup of coffee, looking at the objects. To the right, a man in a blue fleece jacket looks toward the camera with a slight smile. In the background, there is a "Crous Break" vending machine filled with snacks and drinks, and a digital touch-screen ordering kiosk.

A photograph of Glen Whitney presenting in a lecture hall. He is standing in front of a large blackboard, wearing a light blue button-down shirt and gesturing with both hands. The projection screen above him displays three images of large-scale geometric art installations: "Apollonian Glowsphere," "100 Years of MAA SoCal-Nevada (Cal State Fullerton)," and "Knight's Move (Carnegie Mellon)."

A photograph of Hortensia Soto giving a presentation in a lecture hall. She is standing to the right of a large blackboard, gesturing toward a smaller wall-mounted monitor. The blackboard contains hand-drawn diagrams, including a Venn diagram labeled with terms like "Action," "Perception," and "Sensation," alongside handwritten notes such as "Drawing is knowing." She is wearing a grey top and black trousers.

After looking at some lovely small #illustratingMath models during coffee, Glen Whitney continues with his talk on building "Rigorous Sculptures". Finally, Hortensia Soto delivers the capstone lecture on "Rigorous and Flexible Illustrations". A nice round-up of the talks. (2/3)

A photograph of Zsolt Lavicza presenting in a large lecture hall. He is standing to the right of a large blackboard, wearing a black jacket and glasses. Behind him, a projection screen displays a slide titled "STEAM Education Innovation Research & 3D Modelling" with various diagrams and flowcharts related to educational ecosystems and 3D innovation. Two microphones are positioned on the desk in the foreground.

A photograph of Stacy Brown giving a presentation in a lecture hall. She is standing in front of a large blackboard with hand-drawn geometric figures. The projection screen above her shows a portrait of Henri Poincaré and a quote: "geometry is the art of reasoning well from badly drawn figures; however, these figures, if they are not to deceive us, must satisfy certain conditions." She is mid-gesture, looking toward the audience.

A photograph of Greisy Winicki Landman presenting in a lecture hall. She is wearing a dark jacket and blue jeans, gesturing with her hand while speaking. Behind her is a large, clean blackboard and a projection screen displaying a multi-colored quote by Arcavi (2000) defining "Visualization" as the process of creation, interpretation, and use of pictures, images, and diagrams to communicate and develop ideas.

Today is the fourth day at our "Rigorous Illustrations" conference at the Institut Henri Poincaré. We take a look at #illustratingMath in Education with talks by Zsolt Lavicza (Technology), Stacy Brown (Geometric Proofs), and Greisy Winicki Landman (Role of Visuals). (1/3)

Nadir Hajouji presents in a lecture hall, standing in front of a chalkboard and a projection screen showing a vibrant, complex 3D mathematical visualization. The image on the screen resembles a red, textured fractal or a floral-like geometric structure with a central green void. He is wearing an orange hoodie and speaking into a handheld microphone. Behind him, the chalkboard is filled with handwritten notes about "Locus of critical attention" and "Communicating math experience."

Indira Chatterji stands at the front of a classroom, presenting a slide featuring a large, stylized topological illustration. The graphic is a thick, winding loop with varying shades of pink, white, and green, suggesting a complex surface or manifold. She is wearing a blue top with a peach-colored shawl and glasses, looking toward the audience. The chalkboard behind her remains filled with the previous speaker's notes on mathematical practice and interdisciplinary values.

Igor Kortchemski presents a slide featuring a dense, cloud-like data visualization or point cloud. The image consists of thousands of small, multi-colored dots (mostly green and brown) that form an organic, sprawling shape across the screen. He is dressed in a dark sweater and is speaking into a microphone while standing at the side of the wooden presentation desk. The large chalkboard in the background continues to display diagrams of spheres and handwritten academic notes.

After lunch, we get to critique the works of Nadir Hajouji, Indira Chatterji, and Igor Kortchemski. You can find Nadir's paper: archive.bridgesmathart.org/2025/bridges... and Indira's films: gallery.bridgesmathart.org/exhibitions/.... After the #art, we went back to discussing in small groups. (3/3)

Jean Schmitt stands at the front of a lecture hall, presenting a slide titled "Foundations → Mathematics Bridge." The slide discusses the "Transition to conjecture" and lists bullet points: "Visual elements as variables," "Structure before language," and "Conjecture begins here." To the right of the text is a large photo of a brick wall covered in various smaller images and diagrams connected by lines, with the words "THERE," "HERE," and a large question mark. She is wearing a black jacket and glasses, looking toward her audience.

Philip Ording, from the Pratt Institute, stands in front of a chalkboard and a projection screen. The screen displays the title of his talk, "How not to draw a sphere," noting joint work with Brenda Danilowitz and the Josef & Anni Albers Foundation. On the chalkboard behind him, several geometric diagrams are drawn, including circles representing spheres and a 3D rectangular prism. He is gesturing with both hands as he explains a concept, wearing a dark long-sleeved shirt and light-colored trousers.

In the second half of the morning, after some☕️, we're switching gears. The talks are by Jean Schmitt on "The Visual, The Poetic, the Mathematical Connecting at the Foundations" and Philip Ording on "How not to draw a sphere" (yes, I've drawn it wrong all those years🙈). (2/3)

Loris Palaj stands at a podium in a lecture hall, presenting a slide titled "Analytical Approach." The slide lists several bullet points regarding perception-action loops, "instrumental genesis," and the "BAFS framework," emphasizing bodily experience and tool-mediated perception. She is wearing a dark sweater and jeans, gesturing toward the audience as she speaks.

Jen Christiansen presents in a large lecture hall, standing in front of a projected slide featuring three colorful "spinners" labeled Spin 1, Spin 2, and Spin 3, alongside data grids. The slide illustrates a probability or data selection process. She is wearing a black long-sleeved top and glasses, gesturing with both hands to explain the visual data on the screen.

Lily Ge stands at a presentation desk in a lecture hall, presenting a slide titled "visualization literacy." The slide includes a definition of the term and an example bar chart showing "Average Internet Speeds in Asia." She is wearing a denim jacket over a black shirt and looking toward the side of the room while addressing the audience.

Wednesday: 3rd day of our "Rigorous Illustrations" workshop at the Institut Henri Poincaré. In the morning, we started with 3 talks from: Loris Palaj (Embodying Mathematics without Sight), @jenchristiansen.com (Telling Math Stories), and Lily Ge (Visualization Literacy). (1/3)

Some talks from our #illustratingMath graduate school at @cirm-math.bsky.social are now online and available to watch! 🤩 They're all wonderful so go check them out!

(Featuring @gavagesylvie.bsky.social and @stevejtrettel.bsky.social among others.)

A dark blue celebratory graphic marking the 5-year anniversary of Her Maths Story. The HMS logo appears at the top. Large white text reads “5 years” in the centre, surrounded by yellow star shapes. Additional text highlights milestones: 99 contributors, 200K website visitors, 194 countries reached via the website, and 4.9K followers across social media platforms.

5 years ago today, Her Maths Story went live with our 1st story. What started as a small idea has grown into a global, supportive community celebrating #WomenInMaths. We’re deeply grateful to everyone who has shared, read, supported & believed in this journey. Here’s to the stories still to come 💛✨

A person, Henry Segerman, with gray, curly hair and glasses, stands in front of a large chalkboard in a lecture hall. They are wearing a black zip-up jacket and black pants, gesturing with their hands while speaking into a microphone. Above them, a projector screen shows a close-up video of hands manipulating a 3D-printed sphere with colorful sections. On the chalkboard, handwritten notes include the words "Observations," "Artist Poses Questions," and "Opinions."

A person, Stepan Paul, wearing a green checkered shirt and khaki pants, is presenting in a lecture hall. They are holding a microphone and gesturing toward a large projector screen. The screen displays a mathematical visualization from Desmos, featuring a large shaded circle with several points labeled $a_1$ through $a_9$ plotted around and inside it.

A person, Christopher Hanusa, who is bald and wearing a dark shirt, stands at a wooden desk pointing toward a small wooden box with a glowing blue light inside. A group of four other people are gathered around the desk, leaning in to look closely at the device. The desk also holds a computer monitor, a keyboard, and audio-visual equipment.

A person with gray hair stands at a long chalkboard, writing notes under the heading "Which samples?". Several other people are gathered around them, some sitting on the edge of a desk and others standing, participating in a brainstorming session. The chalkboard is filled with diagrams and handwritten questions, such as "How to encourage people to join?" and "Proof of Picture."

In the afternoon, we continue with the second "Art Critique" session of the week. This time, @henryseg.bsky.social, Stepan Paul, and @mathzorro.bsky.social present their #illustratingMath works and let the audience critique them. Finally, we round things off with more group discussions. (2/2)

A person, Shadab Tabatabaeian, stands at the front of a lecture hall next to a large chalkboard. They are wearing a brown checkered blazer and a black turtleneck, gesturing with their hands while speaking. Behind them, a projector screen displays the title slide of their presentation: "The Body of Proof: How Inscriptions Shape Mathematical Discovery," identifying them as being from Georgetown University in Winter 2026.

A person, Elliot Kienzle, is giving a presentation in a lecture hall. They are wearing a long green and yellow gradient cardigan over a white shirt and a green skirt. They are holding a slide clicker and gesturing toward the projector screen, which reads "Is Math BIG OR small?" with whimsical illustrations of the words and a character with a magnifying glass.

A person, Christopher Hanusa, who is bald and wearing a black button-down shirt, leans over a white table covered in geometric jewelry and mathematical models. They are interacting with three other people who are looking closely at the items. The table is filled with small white cards displaying various 3D-printed shapes and intricate designs.

A person, Frédéric Brechenmacher, stands at a podium in a lecture hall, wearing a black and white patterned jacket over a black shirt. They are gesturing toward a projector screen that displays a complex geometric diagram consisting of intersecting lines and circles. The slide title reads, "A non-textual form of geometric knowledge..."

2nd day of our #illustratingMath workshop on "Rigorous Illustrations" at the Institut Henri Poincaré. We heard from Shadab Tabatabaeian on cognitive effects of proofs, Elliot Kienzle on big vs. small #math, and Frédéric Brechenmacher on model history. Also, jewelry from @mathzorro.bsky.social. (1/2)

Exciting news for the #geometry community!📐I highly recommend the Summer Geometry Initiative (SGI) at MIT. Having supervised student projects there, I’ve seen the incredible work this program fosters. 💡Apply with your own projects here: sgi.mit.edu

Blackboard with equations and drawings of mathematical concepts—including Penrose Triangles. The ledge under the board holds chalk and an abandoned coffee cup.

Eyes and brain awash with imagery related to math, here at Rigorous Illustrations—Their creation and evaluation for mathematical research (a workshop hosted by the Institut Henri Poincaré). The blackboard in the break room does not disappoint. indico.math.cnrs.fr/event/13124/

Four people standing at the front of a lecture hall. On the screen is an introduction slide for "Rigorous Illustration - Their Creation and Evaluation for Mathematical Research".

Excited to be part of this creative community of mathematicians and artists. It plans to be a wonderful and inspiring week at the Institut Henri Poincaré! #illustratingmath

So great to have you, @mathzorro.bsky.social. I think we had a great start today, cannot wait for the other days and to see how the #illustratingMath group discussions develop 🤩

800 followers 🤩 It's great to see so many people interested in #illustratingMath and #MathArt. This year is off to a great start with the trimester at the IHP in Paris. Will deliver regular updates on our activities here. Please tell a friend if you think they'd be interested in this content.