Results 121 to 130 of about 3,007,276 (250)

Automorphism groups of P1$\mathbb {P}^1$‐bundles over geometrically ruled surfaces

Journal of the London Mathematical Society, Volume 113, Issue 6, June 2026.
Abstract We classify the pairs (X,π)$(X,\pi)$, where π:X→S$\pi \colon X\rightarrow S$ is a P1$\mathbb {P}^1$‐bundle over a non‐rational geometrically ruled surface S$S$ and Aut∘(X)$\mathrm{Aut}^\circ (X)$ is relatively maximal, that is, maximal with respect to the inclusion in the group Bir(X/S)$\mathrm{Bir}(X/S)$.
Pascal Fong
wiley   +1 more source

Subschemes of tropical toric varieties

, 2017
The tropicalization of a projective toric variety is a topological space that "looks like" the associated polytope. Tropicalizations of subvarieties of a toric variety are polyhedral complexes inside this space.  These encode degenerations of the variety,
Maclagan, Diane
core  

Coulomb branch algebras via symplectic cohomology

Journal of Topology, Volume 19, Issue 2, June 2026.
Abstract Let (M¯,ω)$(\bar{M}, \omega)$ be a compact symplectic manifold with convex boundary and c1(TM¯)=0$c_1(T\bar{M})=0$. Suppose that (M¯,ω)$(\bar{M}, \omega)$ is equipped with a convex Hamiltonian G$G$‐action for some connected, compact Lie group G$G$.
Eduardo González, Cheuk Yu Mak, Dan Pomerleano   +2 more
wiley   +1 more source

Two dimensional local Z2-systems and non-orientable closed surfaces

四川大学学报. 自然科学版, 2016
It is a canonical technique to construct manifolds（algebraic varieties）with polytopes in the theory of toric variety. In this paper, firstly, we introduce the concept of local Z2-systems on simplicial polytopes and then we discuss some properties of it ...
ZHANG Shu-Ying, ZHAO Suo
doaj  

Irrational Toric Varieties [PDF]

, 2019
Classical toric varieties are among the simplest objects in algebraic geometry. They arise in an elementary fashion as varieties parametrized by monomials whose exponents are a finite subset A of Zⁿ . They may also be constructed from a rational fan Σ in
Pir, Ata Firat
core  

Policing the Environmental Crisis: Climate Protest, the State, and Law and Order

Constellations, Volume 33, Issue 2, Page 274-284, June 2026.
Oscar Talbot
wiley   +1 more source

TWISTED FORMS OF TORIC VARIETIES [PDF]

Transformation Groups, 2016
41 pages; numerous revisions: introduction more accessible, results now weaker for singular varieties in positive ...
openaire   +2 more sources

Efficient and simple Gibbs state preparation of the two-dimensional toric code via duality to classical Ising chains

Physical Review Research
We introduce the notion of polynomial-depth duality transformations, which relates two sets of operator algebras through a conjugation by a poly-depth quantum circuit, and make use of this to construct efficient Gibbs samplers for a variety of ...
Pablo Páez-Velasco, Niclas Schilling, Samuel O. Scalet, Frank Verstraete, Ángela Capel   +4 more
doaj   +1 more source

Tropical expansions and toric variety bundles [PDF]

A tropical expansion is a degeneration of a toroidal embedding, induced by a polyhedral subdivision of its tropicalisation. Each irreducible component of a tropical expansion admits a collapsing map down to a stratum of the original variety. We study the
Carocci, F, Nabijou, N
core  

Toric Orbifolds

, 2019
The objective of this essay is to introduce some of the broad theory involving toric varieties, and fit into it some recent advances about toric orbifolds. We first introduce the geometric-combinatorial objects the theory of toric varieties is built upon,
Elkoroaristizabal Peleteiro, Ander
core   +1 more source