Heegaard gradient and virtual fibers.
Maher, Joseph (2005)
Geometry & Topology
Similarity:
Maher, Joseph (2005)
Geometry & Topology
Similarity:
Aigon-Dupuy, Aline (2004)
Annales Academiae Scientiarum Fennicae. Mathematica
Similarity:
Hoffman, David, Wei, Fusheng (2002)
Experimental Mathematics
Similarity:
J. Carter, Masahico Saito (1998)
Banach Center Publications
Similarity:
A necessary and sufficient condition for an immersed surface in 3-space to be lifted to an embedding in 4-space is given in terms of colorings of the preimage of the double point set. Giller's example and two new examples of non-liftable generic surfaces in 3-space are presented. One of these examples has branch points. The other is based on a construction similar to the construction of Giller's example in which the orientation double cover of a surface with odd Euler characteristic...
Schmutz Schaller, Paul (2000)
Annales Academiae Scientiarum Fennicae. Mathematica
Similarity:
Lee Rudolph (1985)
Revista Matemática Iberoamericana
Similarity:
M. P. Dussan, M. Magid (2010)
Annales Polonici Mathematici
Similarity:
We characterize the Christoffel pairs of timelike isothermic surfaces in the four-dimensional split-quaternions. When restricting the receiving space to the three-dimensional imaginary split-quaternions, we establish an equivalent condition for a timelike surface in ℝ³₂ to be real or complex isothermic in terms of the existence of integrating factors.
Arés Gastesi, Pablo (1999)
Annales Academiae Scientiarum Fennicae. Mathematica
Similarity:
Itoh, Jin-ichi, Sinclair, Robert (2004)
Experimental Mathematics
Similarity:
Konno, K. (2000)
Portugaliae Mathematica
Similarity:
Margarita Mendes Lopes (2004)
Collectanea Mathematica
Similarity:
In 1985 Xiao Gang proved that the bicanonical surface of a complex surface S of general type with p2(S) > 2 is not composed of a pencil. In this note a new proof of this theorem is presented.
Tomasz Szemberg (1996)
Annales Polonici Mathematici
Similarity:
Principally polarized abelian surfaces are the Jacobians of smooth genus 2 curves or of stable genus 2 curves of special type. In [S] we studied equations describing Kummer surfaces in the case of an irreducible principal polarization on the abelian surface. The aim of this note is to give a treatment of the second case. We describe intermediate Kummer surfaces coming from abelian surfaces carrying a product principal polarization. In Proposition 12 we give explicit equations of these...