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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 26 27 28 | \DOC axiom
\TYPE {axiom : (string -> string -> thm)}
\SYNOPSIS
Loads an axiom from a given theory segment of the current theory.
\DESCRIBE
A call of {axiom `thy` `ax`} returns axiom {ax} from the theory segment {thy}.
The theory segment {thy} must be part of the current theory. The name {ax} is
the name given to the axiom by the user when it was originally added to the
theory segment (by a call to {new_axiom}). The name of the current theory
segment can be abbreviated by {`-`}.
\FAILURE
The call {axiom `thy` `ax`} will fail if the theory segment {thy} is not part
of the current theory. It will fail if there does not exist an axiom of name
{ax} in theory segment {thy}.
\EXAMPLE
{
#axiom `bool` `BOOL_CASES_AX`;;
|- !t. (t = T) \/ (t = F)
}
\SEEALSO
axioms, definition, load_axiom, load_axioms, new_axiom, print_theory, theorem.
\ENDDOC
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