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$\begingroup$

I have found some pretty complete lists (I think) of mathematical symbols here and here, but I don't see a symbol for the word "and" on either list. A person could easily just write the word "and" or use an ampersand, but I was wondering if there was an actual mathematical symbol for the word "and". Also, if anyone knows any lists that are more complete than the ones I have linked to please provide a link.

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    It's also not uncommon to write something like "axtract the meaning from. – 2011-01-24

3 Answers 3

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The logical "and" is $\wedge$ (and the corresponding "or" is $\vee$).

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    Sometimes, $A\land B = \gcd(A,B)$ and $A\lor B=\text{lcm}(A,B)$. Thus, for **and** \ **or**, I commonly use $\barwedge$ and $\veebar$ respectively. Or, I put a dot inside $\land$ and $\lor$, depending on the circumstance, i.e. $\require{HTML} \style{display: inline-block; transform: rotate(90deg)}{\lessdot}$ and $\require{HTML} \style{display: inline-block; transform: rotate(90deg)}{\gtrdot}$. Ensure to state your kind of notation before you present it, though.2018-05-17
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I'll also add that, perversely, the comma can mean either "and" or "or", depending on context. For example, in classical sequent calculus, $\{ P, Q \} \vdash \{ R, S \}$ means $P \land Q \vdash R \lor S$. Also, in set-builder notation $\{ \ldots : \ldots \}$, in a certain sense, commas in the left half are disjunctions and commas in the right half are conjunctions... which is the exact opposite of $\vdash$.

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The ampersand & is unmistakeable and just about right in semi-formal statements where "and" would be too wordy and a comma would be not very clear. The notation $\land$ is appropriate for formal logic, but isn't used much in general mathematics.