Miscellaneous Symbols

Written by Jerry Ratzlaff on . Posted in Nomenclature & Symbols for Engineering, Mathematics, and Science

Mathematics Symbols

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Nomenclature & Symbols for Engineering, Mathematics, & Science

Postulates and theorems

Miscellaneous Symbols

This is a list of the most common miscellaneous symbols:

SymbolDefinitionExample
\(a^n\) power, an exponent \(5^4 = 3125\)
 % percent, \(1\)% \(= 1/100 \) \(5\)% \(\times 4 = 0.2 \)
\(\Phi\) golden ratio \(1 : 1.6180339887...\)
\(\pi\) Pi \(\pi = 3.141592654... \)
\(e\) Euler's number constant \(e = 2.718281828...\)
\(\gamma\) Euler-Mascheroni constant \(\gamma = 0.5772156649...\)
\(x!\) fractional \(5!=5\;x\;4\;x\;3\;x\;2\;x\;1=120 \)
\( \sum\) sigma, summation or sum of all \( \sum_{n=4}^8 n = 4+5+6+7+8=30 \)
\(\exists\) there exists  
\(\nexists\) there does not exists  
\(\forall\) for all  
\(\infty\) infinity  
\(\propto\) porportional to \(\frac{1}{4} \propto \frac{2}{8}\)
\(i\) imaginary number \(i=\sqrt{-1}\)