Is there a way to \uppercase greeks?

Question

Here's a sample code, which works for latin math, but not for greek math.

\documentclass{article}
\providecommand{\bigset}[1]{\ensuremath{\uppercase{#1}}}
\begin{document}
\bigset d :-) 
\bigset\delta :-(
\end{document}

I can find no clue on whether it is possible to "hellenicize" this idea?

Answer 1

Do it the hard way. However, I heartily recommend not using \ensuremath: put math symbols in math mode.

\documentclass{article}

\newcommand{\UCmath}[1]{%
  \begingroup
  \ucmathlist\MakeUppercase{#1}%
  \endgroup
}

\newcommand{\ucmathlist}{%
  \def\alpha{\mathrm{A}}%
  \def\beta{\mathrm{B}}%
  \let\gamma=\Gamma
  \let\delta=\Delta
  \def\epsilon{\mathrm{E}}%
  \def\varepsilon{\mathrm{E}}%
  \def\zeta{\mathrm{Z}}%
  \def\eta{\mathrm{H}}%
  \let\theta=\Theta
  \let\vartheta=\Theta
  \def\iota{\mathrm{I}}%
  \def\kappa{\mathrm{K}}%
  \let\lambda=\Lambda
  \def\mu{\mathrm{M}}%
  \def\nu{\mathrm{N}}%
  \let\xi=\Xi
  \let\pi=\Pi
  \let\varpi=\Pi
  \def\rho{\mathrm{P}}%
  \def\varrho{\mathrm{P}}%
  \let\sigma=\Sigma
  \def\tau{\mathrm{T}}%
  \let\upsilon=\Upsilon
  \let\phi=\Phi
  \let\varphi=\Phi
  \def\chi{\mathrm{X}}%
  \let\psi=\Psi
  \let\omega=\Omega
}

\newcommand{\bigset}[1]{\ensuremath{\UCmath{#1}}}

\begin{document}

\bigset{d}

\bigset{\delta}

\bigset{\pi}

\bigset{\alpha}

\end{document}