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mathphilately

@mathphilately.bsky.social

Sharing the history of math and science (usually) through my collection of (mostly) math stamps & other miscellany. You can see more at https://www.instagram.com/mathphilately

17 Followers  |  30 Following  |  41 Posts  |  Joined: 16.02.2025  |  1.9053

Latest posts by mathphilately.bsky.social on Bluesky

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Today is August 24. Happy Birthday to Karen Uhlenbeck, born on this date in 1942. She won the 2019 Abel Prize in mathematics for "her pioneering achievements in geometric partial differential equations, gauge theory, and integrable systems, and for the fundamental impact of her work."

24.08.2025 14:16 — 👍 4    🔁 2    💬 0    📌 0
Cash for Math: The Erdős Prizes Live On Paul Erdős placed small bounties on hundreds of unsolved math problems. Over the past 20 years, only a handful have been claimed.

Is there a cash prize for the proof? Erdős was famous for offering cash prizes for solutions …

www.quantamagazine.org/cash-for-mat...

26.05.2025 02:15 — 👍 0    🔁 0    💬 0    📌 0

Agreed. The amount of work it took to write it combined with how different they were … that level of dedication is amazing.

26.05.2025 02:03 — 👍 1    🔁 0    💬 0    📌 0

For those unfamiliar with Erdős …

bsky.app/profile/math...

25.05.2025 15:23 — 👍 0    🔁 0    💬 0    📌 0
A black and white photograph of the mathematician Paul Erdős. Erdős is wearing a blazer and spectacles and grinning with his mouth open.

A black and white photograph of the mathematician Paul Erdős. Erdős is wearing a blazer and spectacles and grinning with his mouth open.

Paul Erdős was famous for his ability to come up with deep conjectures that continue to guide mathematics research today. Recently, a question that Erdős posed about addition was solved by a grad student. www.quantamagazine.org/graduate-stu...

23.05.2025 15:28 — 👍 32    🔁 4    💬 1    📌 1

What always fascinated me most about Russell was how quickly he ‘rolled over and played dead’ with Wittgenstein. I never understood how Wittgenstein could bamboozle such an amazing mind.

25.05.2025 14:30 — 👍 1    🔁 0    💬 1    📌 0
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Principia Mathematica - Wikipedia

“The Principia Mathematica (often abbreviated PM) is a three-volume work on the foundations of mathematics written by the mathematician–philosophers Alfred North Whitehead and Bertrand Russell and published in 1910, 1912, and 1913.”

en.m.wikipedia.org/wiki/Princip...

18.05.2025 12:22 — 👍 1    🔁 0    💬 0    📌 1
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Happy Birthday to Bertrand Russell … May 18, 1872.

“In a long and varied career Russell published a vast number of books on logic, theory of knowledge, and many other topics. His best known work was Principia Mathematica.”

mathshistory.st-andrews.ac.uk/Biographies/...

18.05.2025 12:19 — 👍 0    🔁 0    💬 1    📌 0
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"Surely You're Joking, Mr. Feynman!": Adventures of a C… A New York Times bestseller—the outrageous exploits of …

The classic ‘autobiography’ of Feynman … “Surely You're Joking, Mr. Feynman!": Adventures of a Curious Character” by Richard P. Feynman.

www.goodreads.com/book/show/35...

11.05.2025 13:13 — 👍 1    🔁 0    💬 0    📌 0
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Genius: The Life and Science of Richard Feynman An illuminating portrayal of Richard Feynman—a giant of…

A great biography of Feynman … “Genius: The Life and Science of Richard Feynman” by James Gleick.

www.goodreads.com/book/show/98...

11.05.2025 13:12 — 👍 1    🔁 0    💬 0    📌 0
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Happy Birthday to Richard Feynman … May, 11 1918.

A physicist known for his work in the path integral formulation of quantum mechanics, quantum electrodynamics, the physics of superfluidity & particle physics. Feynman received the Nobel Prize in Physics in 1965.

en.m.wikipedia.org/wiki/Richard...

11.05.2025 13:10 — 👍 1    🔁 0    💬 2    📌 0
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Albert Einstein's Pipe - IAS - 3D model by PolysphereCreative Client: Institute of Advanced Study - Albert Einstein's Pipe - IAS - 3D model by PolysphereCreative

Fun 3D model of Einstein’s pipe at the Institute for Advanced Study …

sketchfab.com/3d-models/al...

05.04.2025 17:52 — 👍 0    🔁 0    💬 0    📌 0
Sophie Germain

Germain’s life story is fascinating for many reasons and worth the read …

mathwomen.agnesscott.org/women/germai...

05.04.2025 11:47 — 👍 0    🔁 0    💬 0    📌 0

Included on the stamp are vibrating surface diagrams and a reference to her famous theorem, known as Germain’s Theorem.

www.math.mcgill.ca/darmon/cours...

05.04.2025 11:44 — 👍 0    🔁 0    💬 0    📌 0
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Happy (belated) Birthday to Sophie Germain April 1, 1776 …

“Germain made a major contributions to number theory (in particular, the theory of primes), acoustics and elasticity.”

The stamp from France 2014 celebrates her 240th birthday.

mathshistory.st-andrews.ac.uk/Biographies/...

05.04.2025 11:42 — 👍 1    🔁 0    💬 2    📌 0
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Happy Birthday to Stefan Banach … March 30, 1892.

“Banach founded modern functional analysis and made major contributions to the theory of topological vector spaces. In addition, he contributed to measure theory, integration, and orthogonal series.”

mathshistory.st-andrews.ac.uk/Biographies/...

30.03.2025 13:00 — 👍 0    🔁 0    💬 0    📌 0
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Happy Belated Birthday to Ulugh Beg … March 22, 1393.

“Beg was a mathematician and astronomer. He founded an important centre for study at Samarkand staffed with the best scientists of the time. He did important early work on trigonometry.”

mathshistory.st-andrews.ac.uk/Biographies/...

23.03.2025 13:30 — 👍 2    🔁 0    💬 0    📌 0
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Happy Birthday Pierre-Simon Laplace … March 23, 1749.

“Laplace proved the stability of the solar system. In analysis he introduced the potential function & Laplace coefficients. He also put the theory of mathematical probability on a sound footing.”

mathshistory.st-andrews.ac.uk/Biographies/...

23.03.2025 12:39 — 👍 1    🔁 0    💬 0    📌 0
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Secret Mathematical Patterns Revealed in Bach's Music Physicists found that the music of Johann Sebastian Bach contains mathematical patterns that help convey information

“Secret Mathematical Patterns Revealed in Bach’s Music …
Physicists found that the music of Johann Sebastian Bach contains mathematical patterns that help convey information”

www.scientificamerican.com/article/secr...

22.03.2025 11:48 — 👍 1    🔁 0    💬 0    📌 0
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March 21, 1685 … the birthday of Johann Sebastian Bach … the mathematician’s composer!

22.03.2025 11:47 — 👍 0    🔁 0    💬 1    📌 0
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Unearthed notebooks shed light on Victorian genius who inspired Einstein Michael Faraday’s illustrated notes that show how radical scientist began his theories at London’s Royal Institution to go online

“Unearthed notebooks shed light on Victorian genius who inspired Einstein. Michael Faraday’s illustrated notes that show how radical scientist began his theories at London’s Royal Institution to go online.”

www.theguardian.com/science/2025...

15.03.2025 23:00 — 👍 0    🔁 1    💬 0    📌 0
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Happy Birthday to this guy … and Happy Pi Day!

14.03.2025 21:08 — 👍 1    🔁 0    💬 1    📌 0
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Seven Bridges of Königsberg - Wikipedia

Read more here - en.m.wikipedia.org/wiki/Seven_B...

09.03.2025 13:55 — 👍 0    🔁 0    💬 0    📌 0

“The city of Königsberg was set on both sides of the Pregel River, & included two large islands which were connected to each other, & to the two mainland portions of the city, by 7 bridges. The problem was to devise a walk through the city that would cross each of those bridges once & only once."

09.03.2025 13:54 — 👍 0    🔁 0    💬 0    📌 0
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On March 9, 1736 ... "Euler received a letter from the mayor of Danzig (now Gdansk in Poland) challenging him to solve the Königsburg Bridge Problem."

This postcard from South Korea 2014 celebrates the famous problem.

09.03.2025 13:51 — 👍 0    🔁 0    💬 2    📌 0

That is incredible!

09.03.2025 12:52 — 👍 0    🔁 0    💬 0    📌 0

Great mathematician and even better person! My condolences.

09.03.2025 12:51 — 👍 0    🔁 0    💬 0    📌 0
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Sofia Kovalevskaya - Biography Sofia Kovalevskaya was a Russian born mathematician who made valuable contributions to the theory of differential equations. She finished her career in Sweden.

You can learn more about these women here …

Sofia Kovalevskaya - mathshistory.st-andrews.ac.uk/Biographies/...

Marie Curie - www.nobelprize.org/prizes/physi...

Florence Nightingale - mathshistory.st-andrews.ac.uk/Biographies/...

09.03.2025 00:14 — 👍 0    🔁 0    💬 0    📌 0
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In honor of International Women's Day, here are three stamps celebrating Sofia Kovalevskaya, Marie Curie and Florence Nightingale.

09.03.2025 00:09 — 👍 1    🔁 0    💬 1    📌 0
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Fields Medal - Wikipedia

Fields Medal … “The Fields Medal is regarded as one of the highest honors a mathematician can receive … awarded to two, three, or four mathematicians under 40 years of age at the International Congress of the International Mathematical Union (IMU).”

en.m.wikipedia.org/wiki/Fields_...

05.03.2025 22:32 — 👍 0    🔁 0    💬 0    📌 0

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