Difference between "≈", "≃", and "≅" - Mathematics Stack Exchange
The symbol ≅ is used for isomorphism of objects of a category, and in particular for isomorphism of categories (which are objects of CAT). The symbol ≃ is used for equivalence of categories. …
notation - What does "∈" mean? - Mathematics Stack Exchange
2014年6月25日 · Another possible notation for the same relation is {\displaystyle A\ni x,} A\ni x, meaning "A contains x", though it is used less often. The negation of set membership is …
What does "curly (curved) less than" sign $\\succcurlyeq$ mean?
2014年2月9日 · Does it sometimes denote, in measurement theory; often the qualitative counterpart to $\geq $ in the numerical representation; when one wants to numerically …
Is there a closed form expression for the infinity symbol?
2015年5月11日 · The Lemniscate of Bernoulli is a plane curve with a shape similar to the infinity symbol. It can be ...
category theory - Special arrows for notation of morphisms ...
Also, if epimorphisms and monomorphisms have their own special arrows, are isomorphisms notated by a special symbol as well, maybe a juxtaposition of $\hookrightarrow$ and …
Direction of vector curve - Mathematics Stack Exchange
Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their …
number theory - The Legendre family of elliptic curves
2019年2月6日 · I remember that I read from a reference, which I could not find now, that the Legendre family is the family of elliptic curve over $\Gamma(2) \backslash \mathbb{H}$ (or …
Is this Batman equation for real? - Mathematics Stack Exchange
$\begingroup$ @Jim: If you mouse over the downvote button, you see: "This question does not show any research effort; it is unclear or not useful."
real analysis - Rectifiable Curve - Mathematics Stack Exchange
2017年5月16日 · The curve is not rectifiable if we can find a "zig-zag" approximation for the curve with arbitrarily large ...
algebraic geometry - Elliptic Curves and Points at Infinity ...
When you look at the elliptic curve as a group, you need to take into account the point at infinity because it forms the identity for the group operation. It's just that looking at a "finite" slice is …