Supersymmetric world from a conservative viewpoint
A solution manual for Polchinski's "String Theory" (PDF)
i think that simon donaldson is one of the greatestpure mathematician that generate physical properties by the mathematics structures-topological geometry and algebrical geometics,through gauge theories and quantic theory;the 4-dimensiona spacetimel manifolds generate all the forces,particles,fields and physical metrics.
simon donaldson,s hawking,and r penrose could to win the physics nobel prize
some 4-dimensional spacetime manifolds are not totallynon-smooth,with different topologies,where these structures are quasi-particles.the connections of space and time in spacetime continuos permit non-smooth structures,that is time,that modify the metrics of the curvatures of space as the gravity.
simon donaldson founded the 4-dimensional manifold of the einstennian spacetime continuum.being that thatexotics structures of 4-dimensions manifolds are the connections of space and time in spacetime continuos.being the metrics not totally smooths-that is the time.