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- notation - What does := mean? - Mathematics Stack Exchange
Other symbols I have seen used for "is defined to be equal to" are three horizontal lines instead of two, and $=$ with either a triangle or "def" written directly above it I have seen variants of these used by people who predate widespread knowledge of computer programming It would be interesting to know the earliest uses of a special symbol for this (and what symbols were chosen) An
- What is the meaning of ⊊? - Mathematics Stack Exchange
I have encountered this when referencing subsets and vector subspaces For example, T ⊊ span(S) should mean that T is smaller than span(S)--at least from what I've gathered Is ⊊ a sort of ≤ or lt
- notation - what does ≼ or ≺ mean? - Mathematics Stack Exchange
I was reading a paper about well-orderings and this came up: Suppose (E, ≤) and (F, ≼) are isomorphic well-orderings Then there exists a unique isomorphism for (E, ≤) to (F, ≼) I've been scouri
- The meaning of various equality symbols - Mathematics Stack Exchange
The meaning of various equality symbols Ask Question Asked 10 years, 10 months ago Modified 9 years, 10 months ago
- The meaning of this symbol - Mathematics Stack Exchange
This page is from Measure and category by John C Oxtoby page 20 What is the meaning of this symbol? I added a red line under it There is no definition of this symbol in this book, so I couldn't
- Meaning of completeness in logic - Mathematics Stack Exchange
What is the standard definition of completeness? From what I have researched I have come across two different definitions: A set of formulas $\\Gamma$ is complete iff for all formulas $\\varphi$ if $\\
- Much less than, what does that mean? - Mathematics Stack Exchange
What exactly does $\\ll$ mean? I am familiar that this symbol means much less than but what exactly does "much less than" mean? (Or the corollary, $\\gg$) On Wikipedia, the example they use i
- What is the meaning of having ^ over a vector name?
8 What is the usual meaning of having the symbol $\hat {}$ (i e , a hat) over a vector name? What do vectors denoted by $\hat {\mathbf {u}}$ usually represent? For example, in this video, at min 3:00, the author denotes a unit vector by $\hat {\mathbf {u}}$, but I don't understand why not simply denoting it by $\mathbf {u}$
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