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Related papers: Constructing explicit K3 spectra

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The notion of a K3 spectrum is introduced in analogy with that of an elliptic spectrum and it is shown that there are "enough" K3 spectra in the sense that for all K3 surfaces X in a suitable moduli stack of K3 surfaces there is a K3…

Algebraic Topology · Mathematics 2020-02-13 Markus Szymik

We survey recent results on ample cones and birational contractions of holomorphic symplectic varieties of K3 type, focusing on explicit constructions and concrete examples.

Algebraic Geometry · Mathematics 2015-06-29 Brendan Hassett , Yuri Tschinkel

We construct explicit equations of Cartwright-Steger and related surfaces.

Algebraic Geometry · Mathematics 2024-04-17 Lev A. Borisov , Sai-Kee Yeung

This survey deals with the construction of a category of spectral triples that is compatible with the Kasparov product in $KK$-theory. These notes serve as an intuitive guide to these results, avoiding the necessary technical proofs. We…

K-Theory and Homology · Mathematics 2013-04-16 Bram Mesland

We review some of the interplay between mirror symmetry and K3 surfaces.

Algebraic Geometry · Mathematics 2014-08-12 Kazushi Ueda

This is the third part of the work on the exact triangles. We construct chain homomorphisms and show exactness of the resulting sequence.

Differential Geometry · Mathematics 2007-05-23 Matilde Marcolli , Bai-Ling Wang

Following Valloni, we study complex projective K3 surfaces having complex multiplication by rings of integers.

Algebraic Geometry · Mathematics 2025-06-03 Eva Bayer-Fluckiger

By modifying the ideas from our previous paper [SIGMA 13 (2017), 075, 26 pages, arXiv:1705.04005], we construct spectral triples from implementations of covariant derivations on the quantum disk.

Operator Algebras · Mathematics 2019-05-29 Slawomir Klimek , Matt McBride , John Wilson Peoples

We construct a spectral sequence for computing KR-theory, analogous to the spectral sequence relating motivic cohomology to algebraic K-theory.

Algebraic Topology · Mathematics 2007-05-23 Daniel Dugger

We describe and compute the homotopy of spectra of topological modular forms of level 3. We give some computations related to the "building complex" associated to level 3 structures at the prime 2. Finally, we note the existence of a number…

Algebraic Topology · Mathematics 2008-12-11 Mark Mahowald , Charles Rezk

We present a method of creation of photonic structures whose optical spectrum of the reflection coefficient has an arbitrary shape and has predetermined features. We develop an algorithm for the construction of a photonic crystal structure,…

Optics · Physics 2023-05-16 S. E. Svyakhovskiy , N. I. Pyshkov

We produce some interesting families of resolutions of length three by describing certain open subsets of the spectrum of the generic ring for such resolutions constructed in a recent paper by Weyman.

Commutative Algebra · Mathematics 2022-07-29 Lorenzo Guerrieri , Jerzy Weyman

We construct explicit examples of $K3$ surfaces over ${\mathbb Q}$ having real multiplication. Our examples are of geometric Picard rank 16. The standard method for the computation of the Picard rank provably fails for the surfaces…

Algebraic Geometry · Mathematics 2014-08-13 Andreas-Stephan Elsenhans , Jörg Jahnel

We give a functorial construction of k-invariants for ring spectra and use these to classify extensions in the Postnikov tower of a ring spectrum.

Algebraic Topology · Mathematics 2009-05-15 Daniel Dugger , Brooke Shipley

We explicitly construct Fredholm modules and spectral triples representing any element of $K$-homology groups of Hensel-Steinitz algebras.

Operator Algebras · Mathematics 2025-10-09 Shelley Hebert , Slawomir Klimek , Matt McBride

We give a new example of potential density of rational points on the third punctual Hilbert scheme of a K3 surface.

Algebraic Geometry · Mathematics 2024-12-09 Ekaterina Amerik , Mikhail Lozhkin

Spectral triples (of compact type) are constructed on arbitrary separable quasidiagonal C*-algebras. On the other hand an example of a spectral triple on a non-quasidiagonal algebra is presented.

Operator Algebras · Mathematics 2008-11-04 Adam Skalski , Joachim Zacharias

A constructive method is given for obtaining cospectral vertices in undirected graphs, along with an operation that preserves this construction. We prove that the construction yields cospectral vertices, as well as strongly cospectral…

Combinatorics · Mathematics 2026-01-07 Onur Ege Erden , Fatihcan M. Atay

These notes will give an introduction to the theory of K3 surfaces. We begin with some general results on K3 surfaces, including the construction of their moduli space and some of its properties. We then move on to focus on the theory of…

Algebraic Geometry · Mathematics 2015-09-17 Andrew Harder , Alan Thompson

For a family of K3 surfaces we implement a variation of a general construction of towers of algebraic curves over finite fields given in a previous paper. As a result we get a good tower over $k=\mathbb{F}_{p^2}$, that is optimal if $p=3$.

Algebraic Geometry · Mathematics 2021-06-02 Sergey Galkin , Sergey Rybakov
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