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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 | )abbrev category ELEMFUN ElementaryFunctionCategory
++ Category for the elementary functions
++ Author: Manuel Bronstein
++ Date Last Updated: 14 May 1991
++ Description:
++ Category for the elementary functions;
ElementaryFunctionCategory() : Category == SIG where
SIG ==> with
log : $ -> $
++ log(x) returns the natural logarithm of x.
exp : $ -> $
++ exp(x) returns %e to the power x.
"**": ($, $) -> $
++ x**y returns x to the power y.
add
if $ has Monoid then
x ** y == exp(y * log x)
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