Danny Krashen

mathematician, researcher. he/him.

[Danny Krashen @dkrashen]

@lightediand 65536 because it's a double iterated exponentiation of two, twice! Very squarey.

[Danny Krashen @dkrashen]

@lightediand I don’t know about markers, but Hagoromo does make some nice looking erasers that work with whiteboards!

[Danny Krashen @dkrashen]

@Wiglet1981 I'd love to read something on the topic as well, but for me, a good problem is one that is part of a good story!

[@[email protected] @Nick_Craver]

Still one of the best answers on the internet: https://t.co/AqzVlnR8T8

[Kathie Bailey @kaelbama]

It’s official! Delegates to the International Mathematical Union General Assembly just approved the US bid to host the #ICM2026 in Philadelphia. Mark your calendars for July 22-29, 2026 and join us. #math #maths @NASEM__biso https://t.co/XTD6ix6qC8

[Danny Krashen @dkrashen]

@littmath This feels like a trick question. Isn’t the endomorphism ring of the 0-vector space the 0-ring in which 0=1?

[Danny Krashen @dkrashen]

@sallycol Really nice talk! Thanks for sharing.

[ICERM @ICERM]

Take a look at HAPPY (Harmonic Analysis People’s Presentations on YouTube) to find everything about the channel dedicated to harmonic analysis and its applications. Various video series will be uploaded regularly and related live events will be organized. https://t.co/PezhDbyVoX

[American Mathematical Society @amermathsoc]

The #JMM2022 Is Postponed. Due to serious concerns regarding the Omicron variant of COVID-19, the organizing partners of the Joint Mathematics Meetings (JMM) have decided to postpone the 2022 JMM, originally scheduled to be held in Seattle, January 5-8. (1/4)

[Danny Krashen @dkrashen]

A very nice piece on McBay from last year https://t.co/4q0aJxDfJt

[NYT Science @NYTScience]

“It’s not always a pleasant time to be an African-American mathematician, even in 2021,” a colleague said of Dr. McBay’s accomplishments. “For her to do it when she did — I mean, what in the world?” https://t.co/G8SY6HNuA0

[Panel Pulp @panelpulp]

Tales Of The Mysterious Traveller (1957)

[Danny Krashen @dkrashen]

@TimHenke9 And if the sets have nice interpretations (as with moduli spaces), this works very well!

[Danny Krashen @dkrashen]

@TimHenke9 Yoneda lets you think about schemes as if they were sets of points. You just have to keep in mind these are relative (ring valued) points, and (collections of) set maps have to be natural (transformations).

[Jordan Ellenberg @JSEllenberg]

There's a Galois correspondence for purely inseparable extensions
https://t.co/H14Kcnpdok

[Danny Krashen @dkrashen]

@sarah_zrf Maybe not what you are looking for but what about MacLane and Moerdijk?

[Danny Krashen @dkrashen]

@WanderingPoint @pwr2dppl It seems I disagree with them. That doesn’t mean I wasn’t listening.

[Danny Krashen @dkrashen]

We are at a very polarizing moment in time, where people seem to be working hard to label others as with them or against them. Probably it is an effect of dealing with the Trump presidency and its incredible divisiveness that we are here right now.

[Danny Krashen @dkrashen]

@siwelwerd @pwr2dppl I know this is social media, and all about sound bites, but those who are interested should feel free to read the rest

[Danny Krashen @dkrashen]

We are at a very polarizing moment in time, where people seem to be working hard to label others as with them or against them. Probably it is an effect of dealing with the Trump presidency and its incredible divisiveness that we are here right now.

[Danny Krashen @dkrashen]

@kay314159 Oops! Sorry about the typo @mathbabedotorg 😬

[Danny Krashen @dkrashen]

Why I have joined the AMR
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I have been following the AMR thread for a while now, and based on the tone of the discussion I think it is appropriate for me to explain why I have chosen to join the AMR. My main personal reasons are these: (1/13)