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D.2.6.6 lcm
Procedure from library poly.lib (see poly_lib).
- Usage:
- lcm(p[,q]); p int/intvec q a list of integers or
p poly/ideal q a list of polynomials
- Return:
- the least common multiple of p and q:
- of type int if p is an int/intvec
- of type poly if p is a poly/ideal
Example:
| | LIB "poly.lib";
ring r = 0,(x,y,z),lp;
poly p = (x+y)*(y+z);
poly q = (z4+2)*(y+z);
lcm(p,q);
==> xyz4+2xy+xz5+2xz+y2z4+2y2+yz5+2yz
ideal i=p,q,y+z;
lcm(i,p);
==> xyz4+2xy+xz5+2xz+y2z4+2y2+yz5+2yz
lcm(2,3,6);
==> 6
lcm(2..6);
==> 60
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