We introduce a dual lifting of unified gauge theories, the first chara
cterized by the isotopies, which are axiom-preserving maps into broade
r structures with positive-definite generalized units used for the rep
resentation of matter under the isotopies of the Poincare symmetry, an
d the second characterized by the isodualities, which are anti-isomorp
hic maps with negative-definite generalized units used for the represe
ntation of antimatter under the isodualities of the Poincare symmetry.
We then submit, apparently for the first time, a novel grand unificat
ion with the inclusion of gravity for matter embedded in the generaliz
ed positive-definite units of unified gauge theories while gravity for
antimatter is embedded in the isodual isounit. We then show that the
proposed grand unification provides realistic possibilities for a reso
lution of the axiomatic incompatibilities between gravitation and elec
troweak interactions due to curvature, antimatter and the fundamental
space-time symmetries.