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martin marcin

@marcinmartin.bsky.social

The generalized Poincare conjecture is an undergraduate-level point-set topology problem for n=1 .
The n=2 case was proven by Poincare.
The n=3 case was recently proven by Perelman.
The n=4 case is the only outstanding case.

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Nothings Monstered

@nothingsmonstrd.bsky.social

A Summer Night. Ukraine — Nataliya Bagatskaya, 2025
Acrylic on canvas
80 x 60 cm

Painting of a table set for dinner for one an empty bowl and Empty Glass there's a covered dish may contain the food there's a red book on the table and sitting on top of the book is a black hat the one behind the table is not facing it and possible dinner she is looking at the window with the cat out the window in between pink and green curtains we see two burning houses and what looks like the rubble of another house destroyed in between them

January 2, 2026 at 11:31 PM

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Open Culture

@openculture.bsky.social

Visit the “Cat Islands” of Japan, Where Felines Outnumber Humans

The world has heard much about the aging and shrinking of Japanese society, a process that has created ghost towns like those we've previously featured here on Open Culture. But however seriously Japa...

www.openculture.com

January 2, 2026 at 11:37 PM

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Vincent van Gogh

@vangogh.bsky.social

Portrait of Dr. Felix Rey - 1889
https://botfrens.com/collections/46/contents/14634

January 3, 2026 at 6:29 AM

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Open Culture

@openculture.bsky.social

Moebius Gives 18 Wisdom-Filled Tips to Aspiring Artists

#1 When you draw, you must first cleanse yourself of deep feelings, like hate, happiness, ambition, etc.

www.openculture.com/2024/09/moeb...

Moebius Gives 18 Wisdom-Filled Tips to Aspiring Artists

Jean Giraud, aka Moebius, was a comic book artist who combined blinding speed with boundless imagination. He shaped the look of Alien, Empire Strikes Back and The Fifth Element. He reimagined the Silv...

www.openculture.com

December 27, 2025 at 9:46 PM

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Nothings Monstered

@nothingsmonstrd.bsky.social

Edgar Allan Poe — Barry Moser, ca. 1992

B&W engraving - Poe's face, modeled on photographs of the writer. Sad eyes.

December 28, 2025 at 3:08 AM

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Vincent van Gogh

@vangogh.bsky.social

Van Gogh often sketched miniature plans—“scratches,” he called them—inside his letters. These tiny ink diagrams showed Theo and friends what he was painting. More than 240 survive, revealing a private side of the artist’s work.

December 28, 2025 at 3:47 AM

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Just Dharma

@justdharma.org

Restless mind ~ Chögyam Trungpa
https://justdharma.org/restless-mind/

#ChögyamTrungpa #sky #mind #buddhanature

December 28, 2025 at 2:00 PM

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James Martin, SJ

@jamesmartinsj.bsky.social

Were Jesus, Mary and Joseph refugees?

In today’s Feast of the Holy Family, we read of Jesus, Mary and Joseph fleeing the murderous designs of an evil king and journeying to Egypt, a traditional refugee for Jewish people of the time, as Joan Taylor points out in her book “Boy Jesus.”