TU-Berlin | → | Inst. f. Mathematik | → | Algebra und Zahlentheorie | → | KASH | → | Documentation | → | Reference Manual
| KASH3 Reference Manual
Introduction | Reference Manual | Index
| search
| ### Function HasPreimage ( any x, map() f ) -> elt-alg^boo, any ### Optional Arguments
Results | elt-ord^rat |  | 1 <= Results <= 2
### Description True and the preimage of x under f iff it exists, false otherwise. ### Examples x_G:=AbelianGroup([2,3]);x_H:=AbelianGroup(x_G); HasPreimage(x_G.1,x_H.ext1);
| Built: Mon Nov 14 21:12:39 UTC 2005 on mack