Notices tagged with math
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Wikipedia is a bit rubbish on #math.. but this is funny..
I was reading the page on non commutative geometry and spotted this
"A smooth Riemannian manifold M is a topological space with a lot of extra structure"
No papaya!
I wondering if I could extend this definition to
<Mathematical object> is a set with a lot of extra structure on it. ?
https://en.m.wikipedia.org/wiki/Noncommutative_geometry -
How can you have a "tangent" to a "curve" when everything is over a discrete field?
I don't believe most of the explanations of elliptic curve cryptography
#math -
This is very good https://www.bbc.co.uk/programmes/b09nvrcn
#EugeniaCheng speaking about #Math -
this was the lecture. https://youtu.be/mbv3T15nWq0
I've been watching the series, they are wonderful.
International Winter School on Gravity and Light 2015
#math #physics -
I just read
S.S. Al-Riyami and K.G. Paterson, Certificateless public key cryptography 2003
https://web.archive.org/web/20181222114112/http://eprint.iacr.org/2003/126.pdf
The math is not too complicated, but I find the notation a pain.
Also, all the fuss over the group operation being additive in G_1 and multiplicative in G_2 seems such a faff.
#math #crypto -
The lecturer said that for a tensor of rank m over a finite dimensional vector space the number of components is
${m^{dim V}}$
So I looked at that for several hours! and could not understand it.
Well of course I thought about it now and it's obviously ${(dim V)}^m$
But I spent ages trying to convince myself that the incorrect thing was true.
Sometimes you just have to brave
#Math -
I was watching a lecture last night, about vector spaces and tensors. The lecture was great. I've never been very good at tensors, and struggled at that bit whilst at school.
Anyway this lecture made it all super clear, and it was a great introduction to them. HOWEVER the lecturer makes a mistake in a small detail, whilsts discussing the number of components in a tensor with respect to a basis across the vector space.
#math -
https://indy.im/attachment/133937 "If an infinite set of point in the plane determine only integer distances, then all the points lie on a straight line" Nice! #math
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Watching
Bartosz Milewski #math videos on my lunch break. He speaks r e a l l y slowly. So I watch on 1.5x and it seems normal
https://youtu.be/wrpxBXXgLCI -
A gallery of "simple" pathological #math calculus examples https://www.math.tamu.edu/~tom.vogel/gallery/gallery.html
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I haven't done part 2 yet, perhaps I will try tonight. ( and there is a proof of correctness of part I that I think should be added)
But learning about the problem shows it is an example of a "Voronoi diagram" https://en.wikipedia.org/wiki/Voronoi_diagram.
So that is something new and nice! #Math
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From the other place, but how cute, odds and evens of Pascal's triangle make a Sierpinski triangle #Math
https://twitter.com/johncarlosbaez/status/1092693454507986945 https://indy.im/attachment/102243 -
#Beer !math #sunshine what more could one want. Just going over some basic bits I skimmed the other day, whilst thinking about an abstract group as category of a single object.
It doesn't matter what the destination group is because of a natural transformation.
https://indy.im/attachment/21118 -
CW: #Math,Sex I did some #baddata on my #sex life. https://indy.im/attachment/18088
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The category group is a category with one object and all morphisms invertible... Hmmm
#math https://indy.im/attachment/17115 -
ancient drawings of #math, 1988! Each picture takes 1 year to compute! maybe. http://VirtualMathMuseum.org/Surface/scherk/scherk.html
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ancient drawings of #math, 1988! Each picture takes 1 year to compute! maybe. http://VirtualMathMuseum.org/Surface/scherk/scherk.html
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#introductions hi, I'm Nadya, I have 5 accounts and I want one of them to be my main but I can't decide and this is emblematic of my life as a whole. I generally want to do something besides Fluffle Puffpost on a given day but it's the lowest activation energy. I like #freesoftware, #contradancing, #coffee, #yoga, #socialism, #hamradio, #fablabs, #drugs, #math, and everything in my bio. Please join me in screaming into the void; the current hypothesis is if we scream loud enough, we'll get an echo ????
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#introductions hi, I'm Nadya, I have 5 accounts and I want one of them to be my main but I can't decide and this is emblematic of my life as a whole. I generally want to do something besides Fluffle Puffpost on a given day but it's the lowest activation energy. I like #freesoftware, #contradancing, #coffee, #yoga, #socialism, #hamradio, #fablabs, #drugs, #math, and everything in my bio. Please join me in screaming into the void; the current hypothesis is if we scream loud enough, we'll get an echo ????
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#Octave https://grindcore.ch/search?tag=Octave is a great free software replacement for matlab. Sadly is doesn't pay the bills of its lead developer. If you like it, too, this is the time to send some help their way...
#^Looking for Work after 25 Years of Octave https://lists.gnu.org/archive/html/help-octave/2017-02/msg00062.html
#math https://grindcore.ch/search?tag=math -
#Octave https://grindcore.ch/search?tag=Octave is a great free software replacement for matlab. Sadly is doesn't pay the bills of its lead developer. If you like it, too, this is the time to send some help their way...
#^Looking for Work after 25 Years of Octave https://lists.gnu.org/archive/html/help-octave/2017-02/msg00062.html
#math https://grindcore.ch/search?tag=math
