Mathematical Notations

by kamatadu, May 19, 2022, 5:15 PM

Here are all the important and useful Mathematical Notations that are frequently needed.

\begin{tabular}{ | c | c | } \hline Symbol & Meaning \\ \hline $=$ & equal to\\ $\not=$ & not equal to\\ $<$ & less than\\ $>$ & greater than\\ $\le$ & less than or equal to\\ $\ge$ & greater than or equal to\\ $\exists$ & there exists\\ $\in$ & belongs to\\ $\not\in$ & does not belong to\\ $\land$ & and\\ $\lor$ & or\\ $\forall x$ & for all values of x\\ $|$ & such that\\ $\implies$ & implies that\\ $\subseteq$ & subset of\\ $\subset$ & proper subset of\\ $\not\subseteq$ & not a subset of\\ $|A|$ & Cardinality of set $A$ (no. of elements in $A$)\\ $A^C$ or $A'$ or $\bar{A}$ & complement of set A\\ $\cup$ & union\\ $\cap$ & intersection\\ $\phi$ & null set$^{*}$\\ U or S & universal set\\ $\mathbb{Z}$ & set of integers $(0, \pm 1, \pm 2, \ldots)$\\ $\mathbb{Z}^{+}$ & set of positive integers $(1, 2, 3, \ldots)$\\ $\mathbb{Z}^{-}$ & set of negative integers $(-1, -2, -3, \ldots)$\\ $\mathbb{N}$ & set of natural numbers $(1, 2, 3, \ldots)$\\ $\mathbb{Q}$ & set of rational numbers\\ $\mathbb{Q}^{+}$ & set of positive rational numbers\\ $\mathbb{Q}^{-}$ & set of negative rational numbers\\ $\mathbb{R}$ & set of real numbers\\ $\mathbb{R}^{+}$ & set of positive real numbers\\ $\mathbb{R}^{-}$ & set of negative real numbers\\ \hline \end{tabular}
$^{*}\phi$ represents an empty set, not just an element!

Thats all for this post :D, hope you liked it (although there's literally nothing in this post :yaway:).
This post has been edited 10 times. Last edited by kamatadu, Jun 16, 2022, 4:50 PM
Reason: asdf

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7 Comments

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lol set theory most of which is useless for the rest of the math ur gonna learn at the jee or 10+2 level xD
These notations are pretty important and that’s basically it xdxd

Also Sir how so nub, where r u learning alg from? (in ur status)
This post has been edited 1 time. Last edited by kamatadu, May 20, 2022, 6:49 AM
Reason: asdf

by BVKRB-, May 19, 2022, 5:59 PM

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@above tru, set theory aint that important, but functions kindof fun in higher maffs, sar me doin basic algebra for now from random sources
This post has been edited 1 time. Last edited by kamatadu, May 20, 2022, 6:53 AM
Reason: asdf

by kamatadu, May 20, 2022, 6:53 AM

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Oh nais nais I thought u were doing ineqs FEs all high lavil stuff lol

by BVKRB-, May 21, 2022, 10:42 AM

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me not that pro sar, me numbax plix geeb teeps :")

by kamatadu, May 21, 2022, 4:52 PM

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Those who say Set Theory isn't important is yet to see the bigger picture. :)

by amar_04, May 22, 2022, 9:38 AM

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hasbo naki kadbo bujhte parchina, zamn i'm lacking reactions, {insert some reaction}, my blog is blessed to have someone like you lay his footprints on my blog
This post has been edited 2 times. Last edited by kamatadu, Nov 30, 2022, 7:35 AM
Reason: fgs

by kamatadu, May 22, 2022, 5:22 PM

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Amar sir I am talking about JEE stuff not ur high lavil promax oly stuff -___-
At least afaik set theory is basically useless for JEE
Also orz

by BVKRB-, May 24, 2022, 4:44 AM

Dying due to nubness...

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  • We had a great camp in ISI back in February for MTRP (MATHEMATICS TALENT REWARD PROGRAM). So since the fest season of CMI and isi is near,this means the season is back again!!!.So should we post the mtrp 2023 experience?

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  • Saar good luck for RMO
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