+ unsigned precedence() const override {return 38;} // for clarity just below add::precedence
+ size_t nops() const override;
+ ex op(size_t i) const override;
+ int degree(const ex &s) const override;
+ int ldegree(const ex &s) const override;
+ ex coeff(const ex &s, int n = 1) const override;
+ ex collect(const ex &s, bool distributed = false) const override;
+ ex eval() const override;
+ ex evalf() const override;
+ ex series(const relational & r, int order, unsigned options = 0) const override;
+ ex subs(const exmap & m, unsigned options = 0) const override;
+ ex normal(exmap & repl, exmap & rev_lookup, lst & modifier) const override;
+ ex expand(unsigned options = 0) const override;
+ ex conjugate() const override;
+ ex real_part() const override;
+ ex imag_part() const override;
+ ex eval_integ() const override;
+ ex evalm() const override;
+ /** Save (a.k.a. serialize) object into archive. */
+ void archive(archive_node& n) const override;
+ /** Read (a.k.a. deserialize) object from archive. */
+ void read_archive(const archive_node& n, lst& syms) override;
+protected:
+ ex derivative(const symbol & s) const override;