Toby Bartels

Probably the only anglophone Toby Bartels. They/them.

[Toby Bartels @TobyBartels0]

@HeleneZgc @PopulusRe @lucasgautheron @BraneRunner @Riazi_Cafe_en @RogierBrussee @MathPrinceps @taiat5 @marktmaclean @adam_farris1 I'm reminded that for the physics aspects, I really like The Geometry of Physics by Theodore Frankel. Among other things, this is the only book I know that really explains the significance of pseudo-stuff (pseudo-vectors, pseudo-forms, pseudo-orientations).

[Toby Bartels @TobyBartels0]

@HeleneZgc @PopulusRe @lucasgautheron @BraneRunner @Riazi_Cafe_en @RogierBrussee @MathPrinceps @taiat5 @marktmaclean @adam_farris1 … It also starts at a very elementary level, not really assuming that you know any calculus or linear algebra (although if you don't know any calculus then it will move too fast). (4B/4B)

[Toby Bartels @TobyBartels0]

@HeleneZgc @PopulusRe @lucasgautheron @BraneRunner @Riazi_Cafe_en @RogierBrussee @MathPrinceps @taiat5 @marktmaclean @adam_farris1 Finally, there's Advanced Calculus: A Differential Forms Approach by Harold Edwards; this is really a multivariable calculus textbook, but it's emphasis on an early use of differential forms gives it a very differential-geometric flavour. … (4A/4B)

[LN @HeleneZgc]

Does anyone have good textbook/ exercise book recs on exterior differential calculus ? (Without too much differential geometry prerequisites)

cc @PopulusRe @lucasgautheron @BraneRunner @Riazi_Cafe_en @RogierBrussee @MathPrinceps @taiat5 @TobyBartels0 @marktmaclean @adam_farris1

[Senator Megan Hunt @NebraskaMegan]

In Nebraska I’ve introduced LB854 to prevent law enforcement officers from concealing their identities. People have the right to know who is exercising the power of the state over them. We don’t allow anonymous judges or legislators. Law enforcement should not be anonymous either

[Toby Bartels @TobyBartels0]

@TheDemocrats Resign.

[Toby Bartels @TobyBartels0]

@BadmenBad Nobody who says this believes it. They are all liars.

[Center for a Stateless Society @c4ssdotorg]

c4ssdotorg in the other place

[Congresswoman Delia C. Ramirez @repdeliaramirez]

No one more cent. No one more bomb. No one more excuse. 

I joined 12 of my colleagues to demand Congress block any current and future sales of arms and weapons to the Israeli government.

Phase 2 of the ceasefire must proceed and the collective punishment of the Palestinian people must end.

[Toby Bartels @TobyBartels0]

@morallawwithin Actually I don't know for a fact that this is how it works (and couldn't find a straight answer online), but that's how they made this jigsaw puzzle with two solutions: https://t.co/7fwcueA9NY. And it seems like the same thing should work here too.

[Toby Bartels @TobyBartels0]

@morallawwithin You're asking it to make two pictures at once. As it goes through the diffusion process, it alternates (probably not strictly) between optimizing for the Joker's face and optimizing for a pride parade, and eventually it produces both.

Actually, …

[Toby Bartels @TobyBartels0]

Not very motivating, @duolingo.

[suzanne hansen @dezeruimte]

Please help - Safeguarding Research Data ✊ now ~> https://t.co/zhqn542AnO

[Toby Bartels @TobyBartels0]

@mpopv @wordgrammer Ah, *now* it's LSAT question!

[Toby Bartels @TobyBartels0]

@mpopv @L8BL0oM3r @wordgrammer But then what's ‘the new number’?

[Toby Bartels @TobyBartels0]

Clemency has the power to change so many families' lives! @POTUS, I urge you to lead with mercy and justice and use your clemency powers now! #clemencynow #clemencyjusticemercy @FAMMFoundation

[derek guy @dieworkwear]

For SoCal friends,

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