Zobrazeno 1 - 10
of 165
pro vyhledávání: '"Honda, Nobuhiro"'
Autor:
Honda, Nobuhiro, Viaclovsky, Jeff
Let $Z$ be a compact, connected $3$-dimensional complex manifold with vanishing first and second Betti numbers and non-vanishing Euler characteristic. We prove that there is no holomorphic mapping from $Z$ onto any $2$-dimensional complex space. In o
Externí odkaz:
http://arxiv.org/abs/2403.05035
Autor:
Honda, Nobuhiro, Nakata, Fuminori
We provide a new family of indefinite Einstein-Weyl structures of signature (++-) on a 3-manifold, which are real analytic and space-like Zoll. They are obtained by using the minitwistor correspondence. The minitwistor spaces we use are Segre quartic
Externí odkaz:
http://arxiv.org/abs/2208.13567
Autor:
Honda, Nobuhiro, Minagawa, Ayato
Motivated by a kind of Penrose correspondence, we investigate the space of hyperplane sections of Segre quartic surfaces which have an ordinary cusp. We show that the space of such hyperplane sections is empty for two kinds of Segre surfaces, and it
Externí odkaz:
http://arxiv.org/abs/2108.07065
Autor:
Honda, Nobuhiro
Segre surfaces in the title mean quartic surfaces in $\mathbb{CP}^4$ which are the images of weak del Pezzo surfaces of degree four under the anti-canonical map. We first show that minimal minitwistor spaces with genus one are exactly Segre quartic s
Externí odkaz:
http://arxiv.org/abs/2009.05242
Autor:
Honda, Nobuhiro
We investigate the structure of a variety of new Moishezon twistor spaces, by utilizing the pluri-half-anti-canonical map from the twistor spaces. Each of these twistor spaces is bimeromorphic to a double covering of a scroll of planes over a rationa
Externí odkaz:
http://arxiv.org/abs/1810.13030
Autor:
Honda, Nobuhiro1 honda-n@cardiol.med.kyushu-u.ac.jp, Isayama, Koichi1, Kojima, Keisuke1, Furukawa, Shoichiro1, Inanaga, Keita1, Inoue, Shujiro1
Publikováno v:
Pacing & Clinical Electrophysiology. Sep2023, Vol. 46 Issue 9, p1134-1140. 7p.
Autor:
Honda, Nobuhiro, Kreussler, Bernd
We show that the algebraic dimension of a twistor space over n#CP^2 cannot be two if n>4 and the fundamental system (i.e. the linear system associated to the half-anti-canonical bundle, which is available on any twistor space) is a pencil. This means
Externí odkaz:
http://arxiv.org/abs/1510.07232
Autor:
Honda, Nobuhiro
It is shown that there exists a twistor space on the $n$-fold connected sum of complex projective planes $n\mathbb{CP}^2$, whose algebraic dimension is one and whose general fiber of the algebraic reduction is birational to an elliptic ruled surface
Externí odkaz:
http://arxiv.org/abs/1504.03061
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