EXPLICIT GEOMETRIC CONSTRUCTIONS OF BORDISM OF MILNOR HYPERSURFACE AND CP3×CPN-

In the present paper we construct two new explicit complex bordisms between any two projective bundles over C P ¹ of the same complex dimension, including the Milnor hypersurface H _{1 ,n} and C P ¹ ×C P ^{n -1}. These constructions reduce the bordism problem to the null-bordism of some projective bundle over C P ¹ with the non-standard stably complex structure.