# Math Symbols We are using a subset of [AsciiMath](https://asciimath.org/) syntax to define a variable name for several reasons. First, defining subscripts and superscripts is extremely easy with AsciiMath. To define a subscript or superscript, write underscore `_` for subscript or caret `^` for superscript anywhere after the symbol baseline. You can find examples below. A\_s,xx -> $$A\_{s,xx}$$ L\_span,i^0.5 -> $$L\_{span,i}^{0.5}$$ * L - baseline * span,i - subscript * 0.5 - superscript Another reason is that Greek letters in AsciiMath can be defined using Latin letters. You can find the complete list of Greek letters and how they are defined below.
SmallDefinitionCapitalDefinitionAlternativeDefinition
\alpha\alphaAA
\beta\betaBB
\gamma\gamma\Gamma\Gamma
\delta\delta\Delta\Delta
\epsilon\epsilonEE\varepsilon\varepsilon
\zeta\zetaZZ
\eta\etaHH
\theta\theta\Theta\Theta\vartheta\vartheta
\iota\iotaII
\kappa\kappaKK\varkappa\varkappa
\lambda\lambda\Lambda\Lambda
\mu\muMM
u\nuNN
\xi\xi\Xi\Xi
\omicron\omicronOO
\pi\pi\Pi\Pi\varpi\varpi
ho\rhoPP\varrho\varrho
\sigma\sigma\Sigma\Sigma\varsigma\varsigma
\tau\tauTT
\upsilon\upsilon\Upsilon\Upsilon
\phi\phi\Phi\Phi\varphi\varphi
\chi\chiXX
\psi\psi\Psi\Psi
\omega\omega\Omega\Omega
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