sm1_mul
sm1_mul_h
は homogenized Weyl 代数用.
[277] sm1_mul(dx,x,[x]); x*dx+1 [278] sm1_mul([x,y],[1,2],[x,y]); x+2*y [279] sm1_mul([[1,2],[3,4]],[[x,y],[1,2]],[x,y]); [[x+2,y+4],[3*x+4,3*y+8]]
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