Koshkin

16 ms·

271.
by Koshkin 2y ago
A matrix is an array of numbers. It usually represents a linear map (in some basis). A tensor is more like that linear map.
272.
by Koshkin 2y ago
"4x4 tensor" is not a useful notion. A (4, 4)-rank tensor would make more sense...
273.
by Koshkin 2y ago
This is perfect! Thanks
274.
by Koshkin 2y ago
"Here here!" is indeed topological. "Hear, hear!", on the other hand, is conversational.
275.
by Koshkin 2y ago
More simply, a tensor is an element of a tensor product of linear spaces. (And a monad is simply a monoid in the category of endofunctors.)
276.
by Koshkin 2y ago
> all such physical quantities are used to describe multilinear functions Why always think of tensors as "functions"? In physics, we often think of them as "quantities" - scalar, vector, etc.
277.
by Koshkin 2y ago
One better resource to learn about tensors: https://grinfeld.org/books/An-Introduction-To-Tensor-Calculu...
278.
by Koshkin 2y ago
What I miss is a 64-bit DOS that has never existed.
279.
by Koshkin 2y ago
Indeed, Fermi was called "the Pope of physics." Fermi’s “intuito fenomenale” — phenomenal intuition — and his near infallibility in predicting the results of experiments were characteristics that prompted colleagues at the Univer
280.
by Koshkin 2y ago
I wonder if the autograph in this copy of a T.D.'s book is real. https://www.amazon.com/Symmetries-Asymmetries-Particles-Jess...
281.
by Koshkin 2y ago
The A.I. appears to have misinterpreted "FEET Size 14" seen at the bottom of the picture.
282.
by Koshkin 2y ago
Well, the difference is that "6000" is not science, while "14 billion" is. And no, there is no need to "believe in science" (although many indeed do); the idea that "scientific fact" (let alone a hypo
283.
by Koshkin 2y ago
The USSR was not the only country vying for domination.
284.
by Koshkin 2y ago
Well, to be fair, the idea was abandoned back in the 1930s.
285.
by Koshkin 2y ago
Apple calls it "space black."
286.
by Koshkin 2y ago
Incidentally, the classic C did not have 'void'; instead, it was assumed that any function would, by default, return 'int' in the form of some value stored in the accumulator, and so the "value" of 'void&#
287.
by Koshkin 2y ago
... which is also the integral :)
288.
by Koshkin 2y ago
True - none of my mathematics textbooks have the name 'Paul Erdős' mentioned in them.
289.
by Koshkin 2y ago
Why, it's an improvement: I, for one, would like to know which air purifiers are the best ones...
290.
by Koshkin 2y ago
What horrific things a power plant can be used for?
291.
by Koshkin 2y ago
> Yiddish being a Slavic language I wonder why anyone would think that. The words predominantly come from German, and the grammar is more of a thing of its own, far from resembling anything Slavic...
292.
by Koshkin 2y ago
Aren't they essentially the same language (unlike Yiddish vs. German)?
293.
by Koshkin 2y ago
Google has no problem searching for X
294.
by Koshkin 2y ago
https://en.wikipedia.org/wiki/Major_Major_Major_Major
295.
by Koshkin 2y ago
Right. No guns, no sale.
296.
by Koshkin 2y ago
Any physical theory is "just a description of the behavior that’s been observed, right? It is a mathematical model." (Saying that 'cat' is just a word describing what's been observed completely misses the point of w
297.
by Koshkin 2y ago
The title of the piece is somewhat misleading - the actual point was, "there is no good technical reason for the lack of free, open ISAs."
298.
by Koshkin 2y ago
There's quite a few of those out there, e.g. https://youtu.be/k8FXF1KjzY0 .
299.
by Koshkin 2y ago
My first programming language was assembler. From the outset that completely removed the shroud of mystery concerning “what happens under the hood.” To this day I am convinced that it was an important step in and of itself, and I also belie
300.
by Koshkin 2y ago
> C will lose relevance slowly, more and more, as much as Zig will gain relevance I have felt a bout of nostalgia for the years past reading this.

More ›