Yes, except you won’t be able to find an injection »of_float :: float => 'a::field«
since there are finite fields. Maybe field_char_0 will be sufficient. Who wants to actually do this? Larry > On 6 Aug 2015, at 11:05, Florian Haftmann > <florian.haftm...@informatik.tu-muenchen.de> wrote: > > A conclusion of what I have understood so far: > * A new »of_float :: float => 'a::field« is provided (btw. »float« could > be also constructed from the rationals rather than the reals). > * »real« is restricted to »real :: nat => real« (which corresponds > nicely to »int :: nat => int«). > * The special case real [ereal] is renamed, e.g. »the_real :: ereal => > real« (cf. enat) > * Other occurences of real are substituted (if coercions do not save the > work). > > Florian > > -- > > PGP available: > http://home.informatik.tu-muenchen.de/haftmann/pgp/florian_haftmann_at_informatik_tu_muenchen_de > _______________________________________________ isabelle-dev mailing list isabelle-...@in.tum.de https://mailmanbroy.informatik.tu-muenchen.de/mailman/listinfo/isabelle-dev