Arturo Portnoy's Avatar

Arturo Portnoy

@portna.bsky.social

Professor of Mathematical Sciences at the University of Puerto Rico, Mayagüez / The pandemic ends when infections end, not when your attention span ends.

1,338 Followers  |  632 Following  |  2,693 Posts  |  Joined: 20.10.2024  |  2.2122

Latest posts by portna.bsky.social on Bluesky

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What a POS...

24.11.2025 20:58 — 👍 1    🔁 0    💬 0    📌 0

It's a good time to remember or research what happened with collaborators of fascism after the regimes fell.

24.11.2025 17:06 — 👍 2    🔁 0    💬 0    📌 0
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How to Get Rid of "Citizens United" We can do away with it without a new Supreme Court. Nor do we need a constitutional amendment. There’s a far simpler way.

Share widely. This is the root of many evils in the USA.
robertreich.substack.com/p/how-to-get...

24.11.2025 13:22 — 👍 0    🔁 0    💬 0    📌 0

Instead of coming up with ways to make and have more, we should be learning how to be happy with less. The world cannot sustain our insatiable "needs".

24.11.2025 13:15 — 👍 1    🔁 0    💬 0    📌 0
Military personnel seek legal advice on whether Trump-ordered missions are lawful
YouTube video by PBS NewsHour Military personnel seek legal advice on whether Trump-ordered missions are lawful

youtu.be/ULWRcyk0o-o?...

23.11.2025 14:46 — 👍 2    🔁 0    💬 0    📌 0
'Trump will not make it to the end of this term compos mentis' | Psychologist analyses Trump
YouTube video by Times Radio 'Trump will not make it to the end of this term compos mentis' | Psychologist analyses Trump

youtu.be/9OtO-cypKmY

23.11.2025 14:42 — 👍 0    🔁 0    💬 0    📌 0
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An image says more than a thousand words.

23.11.2025 12:09 — 👍 1    🔁 0    💬 0    📌 0
Post image 23.11.2025 09:15 — 👍 2    🔁 0    💬 0    📌 0
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Iberia, TAP, Avianca, GOL, Latam y Caribbean suspenden vuelos a Venezuela tras advertencia de Estados Unidos

La medida afecta la conectividad aérea de Venezuela en medio de crecientes tensiones entre Estados Unidos y el gobierno de Nicolás Maduro.

22.11.2025 21:53 — 👍 2    🔁 1    💬 0    📌 0

US operations against Venezuela to begin within days.

Covert ops the first move.

22.11.2025 21:39 — 👍 932    🔁 488    💬 131    📌 218
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Here we go... Again.

22.11.2025 13:31 — 👍 4    🔁 0    💬 0    📌 0
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Akinetomartyria: When You Realise That Society Was Always An Illusion The world is becoming a dystopia of extreme income inequality as corrupt kleptocracies across the planet accumulate embezzled capital at an accelerated pace.

“In the dystopia we’re about to become part of just around the corner, a new level of brutality awaits us: humans will have little value. At best, they will be background furniture props in a movie set: silent, dumb, and forgettable”
open.substack.com/pub/georgets...

22.11.2025 11:41 — 👍 23    🔁 8    💬 1    📌 1

BREAKING: Elon Musk has immediately disabled the "Account based in" feature on Twitter after more than 50% of the MAGA grifter accounts were found to be based outside of the US.
Most of the pro-Israel and MAGA propaganda accounts were being run from India.

22.11.2025 08:50 — 👍 353    🔁 180    💬 10    📌 18
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Buckle up. Again.

21.11.2025 23:49 — 👍 1    🔁 0    💬 0    📌 0
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U.S. Coast Guard will no longer classify swastikas, nooses as hate symbols The military service, which falls under the Department of Homeland Security, has drafted a new policy that classifies such items “potentially divisive.”

alarming. gift link

20.11.2025 18:29 — 👍 63    🔁 43    💬 6    📌 23
Post image 20.11.2025 14:52 — 👍 1    🔁 0    💬 0    📌 0
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COVID PR
Desde diciembre 2021 no tenemos niveles tan bajos de positividad.

20.11.2025 09:38 — 👍 1    🔁 0    💬 0    📌 0

MECHANIC: "Well, that right there is your problem."

19.11.2025 16:46 — 👍 6572    🔁 1274    💬 184    📌 28
Our Economy Is in Danger. Here’s Why
YouTube video by Robert Reich Our Economy Is in Danger. Here’s Why

While corporate profits skyrocket and the stock market rides high, regular Americans are struggling to make ends meet.

Even CEOs of the biggest corporations are starting to understand why this is a huge problem. Watch.

youtu.be/W8OWhw-GXUU

18.11.2025 15:04 — 👍 1390    🔁 498    💬 63    📌 28

People are just stupid...

19.11.2025 16:46 — 👍 0    🔁 0    💬 0    📌 0

Every revolution has its costs. The latest @irena-official.bsky.social report underlines: 91% of new renewable projects are cheaper than fossil fuel alternatives and not only reduce emissions but also drive economic growth and social benefits … www.irena.org/News/pressre...

17.11.2025 12:24 — 👍 12    🔁 10    💬 0    📌 1
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NYU megadonor John Paulson under fire for Epstein ‘black book’ listing - Washington Square News Major NYU donor and Stern board member John Paulson was named “one of the billionaires” in Jeffrey Epstein’s contact list last week by Kentucky Rep. Thomas Massie, who is spearheading a bill to releas...

Esta basura está metida hasta el ñu en PR...
nyunews.com/news/2025/09...

19.11.2025 16:14 — 👍 0    🔁 0    💬 0    📌 0
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MATE 4997 CURSO SIN PRERREQUISITO  PARA ENERO 2026, UPRM MATE 4997-036  LAS MATEMÁTICAS DE LA MÚSICA Y EL ARTE MJ 9:00AM-10:30AM DR. ARTURO PORTNOY

CURSO SIN PRERREQUISITO PARA ENERO 2026, UPRM
MATE 4997-036 LAS MATEMÁTICAS DE LA MÚSICA Y EL ARTE
MJ 9:00AM-10:30AM
DR. ARTURO PORTNOY

Más información sobre el curso: portna.weebly.com/mate-4997.html

19.11.2025 12:31 — 👍 0    🔁 0    💬 0    📌 0
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Covid-19 and cardiovascular disease in a total population-study of long-term effects, social factors and Covid-19-vaccination - Nature Communications Covid-19 has been linked to cardiovascular complications, but the long-term impacts, particularly for mild infections, are not well understood. Here, the authors investigate the long-term impacts of C...

Covid-19 and cardiovascular disease in a total population-study of long-term effects, social factors and Covid-19-vaccination | Nature Communications
www.nature.com/articles/s41...

19.11.2025 11:05 — 👍 5    🔁 1    💬 0    📌 0

"Additionally, our results showed that although the cardiovascular risk following Covid-19 was highest during the first two weeks after an infection, the risk persisted for some cardiovascular outcomes for more than one year after the infection."

19.11.2025 11:05 — 👍 5    🔁 1    💬 1    📌 0

"In conclusion, our study, based on the total Swedish population aged 40–75 years, demonstrated that Covid-19 was associated with an increased risk of both incident cardiovascular disease and mortality (i.e., all cause mortality, CVD mortality and IHD mortality)."

19.11.2025 11:05 — 👍 8    🔁 3    💬 1    📌 0
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Risks for Vascular, Inflammatory Diseases Increased for Children After COVID-19 COVID-19 diagnosis linked to higher risk for arterial thromboembolism, venous thromboembolism, thrombocytopenia, myocarditis or pericarditis

www.empr.com/news/risks-f...

19.11.2025 11:02 — 👍 2    🔁 1    💬 0    📌 0
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🎯

19.11.2025 08:52 — 👍 2    🔁 0    💬 0    📌 0
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Personalized Cancer Vaccines Are Almost Here—But Federal Funding Cuts Could Derail Them Vaccines based on mRNA can be tailored to target a cancer patient’s unique tumor mutations. But crumbling support for cancer and mRNA vaccine research has endangered this promising therapy

Vaccines based on mRNA can be tailored to target a cancer patient’s unique tumor mutations. But crumbling support for cancer and mRNA vaccine research has endangered this promising therapy

18.11.2025 14:26 — 👍 2559    🔁 1346    💬 91    📌 108

Damn!

19.11.2025 05:12 — 👍 4    🔁 2    💬 0    📌 0

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