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Mathematics
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SRobertJames
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22
What do physicists mean when they say something is "not a vector"?
Dec 19, 2023
19
If two pairs of numbers have equal sums and products, what can we conclude about the pairs?
Dec 12, 2023
16
What are examples of Halmos's claim that a single small concrete special case can capture every instance of a concept of great generality?
Mar 19, 2023
15
When studying a book (like Rudin ) where the problems are not intended to be fully solvable by a student, what criteria show you're ready to advance?
Feb 6
9
Does the SVD work on an incomplete field?
May 31, 2023
9
An accurate, rapidly converging estimate of $\sum_{j = 1}^{\infty}\frac 1 {j^2}$ (the Basel Problem) using only elementary calculus
Jan 23
8
How did Feynman produce solutions in under a minute?
Jan 3
7
The Cantor set + the Cantor set = $[0,2]$
Nov 6, 2022
7
Did Paul Halmos state “The heart of mathematics consists of concrete examples and concrete problems"?
Mar 17, 2023
7
$f$ is uniformly continuous $\implies |f(x)| < C + D|x|$
May 4, 2021
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173
What is a safe way to create a Temp file in Java?
47
Using sparse matrices with Keras and Tensorflow
44
How does Keras define "accuracy" and "loss"?
41
Scala: Parse JSON directly into a case class
33
Millisecond resolution of DateTime in Ruby