Expression tools

See examples in Express.mw

Notations

• e algebraic expression
• z::name indeterminate

Procedures

• simplifyradical=e->if(has(e,I),applytoRe/Im,signum(e)*sqrt(expand(rationalize((radnormal(e)^2))))) a patch for standard simplify command.

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• fullparfrac2(e,z::name,$) a patch for standard fullparfrac command.

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• coeffs2(e,vars::list,$)::list([p1,...,pN,c]) user-friendly version of coeffs command.

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• idExch(e,A,id1,id2) exchange indexes id1 and id2 at each occurence of A::name in expression e.
• idSym(e,A,i,j,k,...) symmetrize expression over pair or triple of indexes.
• idASym(e,A,i,j) antisymmetrize expression over pair of indexes.