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 …

2020年12月22日 · What is the meaning of ⊊? Ask Question Asked 4 years, 3 months ago. Modified 4 years, 3 months ago.

The $\approx$ is used mostly in terms of numerical approximations, meaning that the values in questions are "close" to each other in whatever context one is working, and often it is less …

2018年5月20日 · $\begingroup$ $\equiv$ and similar variations are a generic symbols used to notate an equivalence relation. $=$ is the specific equivalence relation "equals" that we are …

$\begingroup$ It is the "floor function", meaning the largest integer $\le$ the quantity within. $\endgroup$

It's used for various things in various contexts. The one about "defined to be equal" is often rendered as ":=".

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 …

2016年4月20日 · $\begingroup$ @twiz: Just using = leaves open the possibility that x is a constant. Sure, we assume that it's a variable, but it's not necessarily the case.

The angled brackets represent an inner product. The best known one is the scalar product or the dot product.If ${\bf u} = (u_1,u_2,u_3)$ and ${\bf v} = (v_1,v_2,v_3)$, then the dot product is …

2016年11月8日 · Trivial solution is a technical term. For example, for the homogeneous linear equation $7x+3y-10z=0$ it might be a trivial affair to find/verify that $(1,1,1)$ is a solution.