Maple + * * = union intersect , - factorial ln log sin cos tan arcsin arccos arctan sinh cosh tanh arcsinh arccosh arctanh sqrt exp max min det trace ± := - / / > >= `subset`( , ) `subset`( , ) not `subset`( , ) not `subset`( , ) ^ [ ] surd( , ) ( ) ¬ int( , ) diff( , ) diff( , ) sum( , = .. ) product( , = .. ) limit( , = ) subs( = , ) int( , = .. ) Matrix([ [ , ] , ]) ( ) { } [ ] abs( ) infinity <Γ> Gamma <Δ> Delta <Θ> Theta <Λ> Lamda <Ξ> Xi <Π> PI <Σ> Sigma <Υ> Upsilon <Φ> Phi <Ψ> Psi <Ω> Omega <α> alpha <β> beta <γ> gamma <δ> delta <ε> epsilon <ζ> zeta <η> eta <θ> theta <ι> iota <κ> kappa <λ> lambda <μ> mu <ν> nu <ξ> xi <π> Pi <ρ> rho <σ> sigma <τ> tau <υ> upsilon <φ> phi <χ> chi <ψ> psi <ω> omega