Using only polynomials in DifferentialOperator.__mul__
Using only polynomials in DifferentialOperator.__mul__

aktech/sympy,madan96/sympy,madan96/sympy,drufat/sympy,Titan-C/sympy,skidzo/sympy,jaimahajan1997/sympy,rahuldan/sympy,hargup/sympy,souravsingh/sympy,sampadsaha5/sympy,chaffra/sympy,sampadsaha5/sympy,postvakje/sympy,jaimahajan1997/sympy,kaushik94/sympy,ChristinaZografou/sympy,kaushik94/sympy,skidzo/sympy,chaffra/sympy,drufat/sympy,souravsingh/sympy,hargup/sympy,yashsharan/sympy,yashsharan/sympy,sampadsaha5/sympy,yashsharan/sympy,souravsingh/sympy,Titan-C/sympy,jaimahajan1997/sympy,Titan-C/sympy,madan96/sympy,kaushik94/sympy,rahuldan/sympy,drufat/sympy,chaffra/sympy,hargup/sympy,postvakje/sympy,aktech/sympy,ChristinaZografou/sympy,rahuldan/sympy,postvakje/sympy,skidzo/sympy,ChristinaZografou/sympy,aktech/sympy