Zobrazeno 1 - 10
of 270
pro vyhledávání: '"Yasuhara, Akira"'
Autor:
Yasuhara, Akira, Hosokawa, Fumio, Asaoka, Sadayuki, Akiyama, Teppei, Iyoda, Tomokazu, Nakayama, Chikako, Sannomiya, Takumi
Scanning transmission electron microscopy (STEM) provides high-resolution visualization of atomic structures as well as various functional imaging modes utilizing phase contrast. In this study we introduce a semicircular aperture in STEM bright field
Externí odkaz:
http://arxiv.org/abs/2410.06871
We give a complete classification of links up to clasp-pass moves, which coincides with Habiro's $C_3$-equivalence. We also classify links up to band-pass and band-# moves, which are versions of the usual pass- and #-move, respectively, where each pa
Externí odkaz:
http://arxiv.org/abs/2407.15437
We define numerical link-homotopy invariants of link maps of any number of components, which naturally generalize the Kirk invariant. The Kirk invariant is a link-homotopy invariant of 2-component link maps given by linking numbers of loops based at
Externí odkaz:
http://arxiv.org/abs/2311.03015
We develop a general diagrammatic theory of welded graphs, and provide an extension of Satoh's Tube map from welded graphs to ribbon surface-links. As a topological application, we obtain a complete link-homotopy classification of so-called \emph{kno
Externí odkaz:
http://arxiv.org/abs/2311.01922
We characterize, in an algebraic and in a diagrammatic way, Milnor string link invariants indexed by sequences where any index appears at most $k$ times, for any fixed $k\ge 1$. The algebraic characterization is given in terms of an Artin-like action
Externí odkaz:
http://arxiv.org/abs/2205.04768
We generalize Milnor link invariants to all types of surface-links in 4-space (possibly with boundary) and more generally to all codimension 2 embeddings. This is achieved by using the notion of cut-diagram, which is a higher dimensional generalizati
Externí odkaz:
http://arxiv.org/abs/2109.14578
Autor:
Rogl, Gerda, Bursikova, Vilma, Yubuta, Kunio, Murayama, Haruka, Sato, Kohei, Yamamoto, Wakaba, Yasuhara, Akira, Rogl, Peter
Publikováno v:
In Journal of Alloys and Compounds 15 March 2024 977
Dabkowski and Sahi defined an invariant of a link in the $3$-sphere, which is preserved under $4$-moves. This invariant is a quotient of the fundamental group of the complement of the link. It is generally difficult to distinguish the Dabkowski-Sahi
Externí odkaz:
http://arxiv.org/abs/2005.11793
For a classical link, Milnor defined a family of isotopy invariants, called Milnor $\overline{\mu}$-invariants. Recently, Chrisman extended Milnor $\overline{\mu}$-invariants to welded links by a topological approach. The aim of this paper is to show
Externí odkaz:
http://arxiv.org/abs/2003.13273