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 Author: secretname [ Fri Jun 17, 2016 10:09 am ] Post subject: why multiple variables monomials got error, how to run this LIB "homolog.lib";int p = printlevel;printlevel= 1;ring r = 0,(a*b*c,a*c,b*c,c),dp;module M = [0,1,0],[0,0,1],[1,0,0];module A = [0,1,1],[1,0,1],[1,1,0];module H = Hom(M,A);below can run, but above got errorLIB "homolog.lib";int p = printlevel;printlevel= 1;ring r = 0,(a,b,c),dp;module M = [0,1,0],[0,0,1],[1,0,0];module A = [0,1,1],[1,0,1],[1,1,0];module H = Hom(M,A);int p = printlevel;> printlevel= 1;> ring r = 0,(a*b*c,a*c,b*c,c),dp; ? `a` is not defined ? error occurred in or before STDIN line 4: `ring r = 0,(a*b*c,a*c,b*c,c),dp;` ? expected ring-expression. type 'help ring;'> module M = [0,1,0],[0,0,1],[1,0,0]; ? no ring active ? `module` is undefined ? error occurred in or before STDIN line 5: `module M = [0,1,0],[0,0,1],[1,0,0];`> module A = [0,1,1],[1,0,1],[1,1,0]; ? no ring active ? `module` is undefined ? error occurred in or before STDIN line 6: `module A = [0,1,1],[1,0,1],[1,1,0];`> module H = Hom(M,A); ? no ring active ? `module` is undefined ? error occurred in or before STDIN line 7: `module H = Hom(M,A);`>

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