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ReadExpr

Read RINGELEM expression from string

Syntax

ReadExpr(R: RING, expr: STRING): RINGELEM

Description

This function reads a RINGELEM expression from a STRING . It is handy to input elements defined in different rings without calling use .

Example

/**/ P ::= QQ[a,b]; /**/ S := NewPolyRing(NewFractionField(P), "x,y"); /**/ ReadExpr(S, "(a^2-b^2)*(x+y)/(a+b)"); (a -b)*x +(a -b)*y

See Also

• RingElem