# S4 method for class 'lgprhs,lgprhs'e1+e2# S4 method for class 'lgpterm,lgpterm'e1+e2# S4 method for class 'lgprhs,lgpterm'e1+e2# S4 method for class 'lgpterm,lgpterm'e1*e2
Arguments
e1
The first sum, term or expression
e2
The second sum, term or expression
Value
The behaviour and return type depend on the types of e1 and e2.
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