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Resource: Alphabets

As mathematical symbols, letters are often used, usually from the English, Danish-Norwegian and Greek alphabets.

The English alphabet
Lowercase$\mathrm a$,$\mathrm b$,$\mathrm c$,$\mathrm d$,$\mathrm e$,$\mathrm f$,$\mathrm g$,$\mathrm h$,$\mathrm i$,$\mathrm j$,$\mathrm k$,$\mathrm l$,$\mathrm m$,$\mathrm n$,$\mathrm o$,$\mathrm p$,$\mathrm q$,$\mathrm r$,$\mathrm s$,$\mathrm t$,$\mathrm u$,$\mathrm v$,$\mathrm w$,$\mathrm x$,$\mathrm y$,$\mathrm z$
Uppwercase$\mathrm A$,$\mathrm B$,$\mathrm C$,$\mathrm D$,$\mathrm E$,$\mathrm F$,$\mathrm G$,$\mathrm H$,$\mathrm I$,$\mathrm J$,$\mathrm K$,$\mathrm L$,$\mathrm M$,$\mathrm N$,$\mathrm O$,$\mathrm P$,$\mathrm Q$,$\mathrm R$,$\mathrm S$,$\mathrm T$,$\mathrm U$,$\mathrm V$,$\mathrm W$,$\mathrm X$,$\mathrm Y$,$\mathrm Z$
The Danish-Norwegian alphabet[1]
Lowercase$\color{silver}{\mathrm a}$,$\color{silver}{\mathrm b}$,$\color{silver}{\mathrm c}$,$\color{silver}{\mathrm d}$,$\color{silver}{\mathrm e}$,$\color{silver}{\mathrm f}$,$\color{silver}{\mathrm g}$,$\color{silver}{\mathrm h}$,$\color{silver}{\mathrm i}$,$\color{silver}{\mathrm j}$,$\color{silver}{\mathrm k}$,$\color{silver}{\mathrm l}$,$\color{silver}{\mathrm m}$,$\color{silver}{\mathrm n}$,$\color{silver}{\mathrm o}$,$\color{silver}{\mathrm p}$,$\color{silver}{\mathrm q}$,$\color{silver}{\mathrm r}$,$\color{silver}{\mathrm s}$,$\color{silver}{\mathrm t}$,$\color{silver}{\mathrm u}$,$\color{silver}{\mathrm v}$,$\color{silver}{\mathrm w}$,$\color{silver}{\mathrm x}$,$\color{silver}{\mathrm y}$,$\color{silver}{\mathrm z}$,$\mathrm æ$,$\mathrm ø$,$\mathrm å$
Uppwercase$\color{silver}{\mathrm A}$,$\color{silver}{\mathrm B}$,$\color{silver}{\mathrm C}$,$\color{silver}{\mathrm D}$,$\color{silver}{\mathrm E}$,$\color{silver}{\mathrm F}$,$\color{silver}{\mathrm G}$,$\color{silver}{\mathrm H}$,$\color{silver}{\mathrm I}$,$\color{silver}{\mathrm J}$,$\color{silver}{\mathrm K}$,$\color{silver}{\mathrm L}$,$\color{silver}{\mathrm M}$,$\color{silver}{\mathrm N}$,$\color{silver}{\mathrm O}$,$\color{silver}{\mathrm P}$,$\color{silver}{\mathrm Q}$,$\color{silver}{\mathrm R}$,$\color{silver}{\mathrm S}$,$\color{silver}{\mathrm T}$,$\color{silver}{\mathrm U}$,$\color{silver}{\mathrm V}$,$\color{silver}{\mathrm W}$,$\color{silver}{\mathrm X}$,$\color{silver}{\mathrm Y}$,$\color{silver}{\mathrm Z}$,$\mathrm Æ$,$\mathrm Ø$,$\mathrm Å$
The Greek alphabet[2]
LowercaseUppercase
Alpha$\mathrm \alpha$$\color{silver}{\mathrm A}$
Beta$\mathrm \beta$$\color{silver}{\mathrm B}$
Gamma$\mathrm \gamma$$\mathrm \Gamma$
Delta$\mathrm \delta$ or $\mathrm \partial$$\mathrm \Delta$
Epsilon$\mathrm \epsilon$ or $\mathrm \varepsilon$$\color{silver}{\mathrm E}$
Zeta$\mathrm \zeta$$\color{silver}{\mathrm Z}$
Eta$\mathrm \eta$$\color{silver}{\mathrm H}$
Theta$\mathrm \theta$ or $\mathrm \vartheta$$\mathrm \Theta$
Iota$\mathrm \iota$$\color{silver}{\mathrm I}$
Kappa$\mathrm \kappa$$\color{silver}{\mathrm K}$
Lambda$\mathrm \lambda$$\mathrm \Lambda$
Mu$\mathrm \mu$$\color{silver}{\mathrm M}$
Nu$\mathrm \nu$$\color{silver}{\mathrm N}$
Xi$\mathrm \xi$$\mathrm \Xi$
Omicron$\color{silver}{\mathrm o}$$\color{silver}{\mathrm O}$
Pi$\mathrm \pi$$\mathrm \Pi$
Rho$\mathrm \rho$ or $\mathrm \varrho$$\color{silver}{\mathrm P}$
Sigma$\mathrm \sigma$$\mathrm \Sigma$
Tau$\mathrm \tau$$\color{silver}{\mathrm T}$
Upsilon$\mathrm \upsilon$$\mathrm \Upsilon$
Phi$\mathrm \phi$ or $\mathrm \varphi$$\mathrm \Phi$
Chi$\mathrm \chi$$\color{silver}{\mathrm X}$
Psi$\mathrm \psi$$\mathrm \Psi$
Omega$\mathrm \omega$$\mathrm \Omega$

References:

  1. Danish and Norwegian alphabet’ (encyclopedia), Wikipedia, 2019, www.wikipedia.org/wiki/Danish_and_Norwegian_alphabet (accessed May 2nd, 2019)
  2. Greek alphabet’ (encyclopedia), Wikipedia, 2019, www.wikipedia.org/wiki/Greek_alphabet (accessed May 2nd, 2019)

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