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The notion of a local fractional derivative (LFD) was introduced recently for functions of a single variable. LFD was shown to be useful in studying fractional differentiability properties of fractal and multifractal functions. It was…

Mathematical Physics · Physics 2008-11-06 Kiran M. Kolwankar , Anil D. Gangal

We study the so-called averaging functors from the geometric Langlands program in the setting of Fargues' program. This makes explicit certain cases of the spectral action which was recently introduced by Fargues-Scholze in the local…

Number Theory · Mathematics 2021-05-17 Johannes Anschütz , Arthur-César Le Bras

This is the author's PhD thesis, which focuses on the so-called Landau-Ginzburg/conformal field theory correspondence. This correspondence dates from the late 80s and early 90s in the physics literature and in particular, it predicts a…

Quantum Algebra · Mathematics 2015-07-24 Ana Ros Camacho

We first investigate two kinds of Fricke families consisting of Fricke functions and Siegel functions, respectively. And, in terms of their special values we generate ray class fields of imaginary quadratic fields, which is related to the…

Number Theory · Mathematics 2014-10-09 Ho Yun Jung , Ja Kyung Koo , Dong Hwa Shin

In 1989 H. Tverberg proposed a quite general conjecture in Discrete geometry, which could be considered as the common basis for many results in Combinatorial geometry and at the same time as a discrete analogue of the common transversal…

Combinatorics · Mathematics 2007-05-23 Sinisa T. Vrecica

The Main Theorem for abelian fields (often called Main Conjecture despite proofs in most cases) has a long history which has found a solution by means of "elementary arithmetic", as detailed in Washington's book from Thaine's method having…

Number Theory · Mathematics 2023-04-25 Georges Gras

In the 1980's, the magic properties of the cohomology of elementary abelian groups as modules over the Steenrod algebra initiated a long lasting interaction between topology and modular representation theory in natural characteristic. The…

Algebraic Topology · Mathematics 2016-06-10 Vincent Franjou , Dang Ho Hai Nguyen , Lionel Schwartz

We outline an approach to prove the two dimensional Jacobian Conjecture using the theory of fractals.

Algebraic Geometry · Mathematics 2015-10-20 Ronen Peretz

The union-closed sets conjecture, attributed to P\'eter Frankl from 1979, states that for any non-empty finite union-closed family of finite sets not consisting of only the empty set, there is an element that is in at least half of the sets…

Combinatorics · Mathematics 2023-06-08 Masoud Zargar

Sixty years ago, John Marstrand published a paper which, among other things, relates the Hausdorff dimension of a plane set to the dimensions of its orthogonal projections onto lines. For many years, the paper attracted very little…

Metric Geometry · Mathematics 2014-11-13 Kenneth Falconer , Jonathan Fraser , Xiong Jin

We conduct a review of the fiducial approach to statistical inference, following its journey from its initiation by R. A. Fisher, through various problems and criticisms, on to its general neglect, and then to its more recent resurgence.…

Statistics Theory · Mathematics 2024-02-15 Philip Dawid

We survey Kondrat'ev--Landis' conjecture, providing an up-to-date account of the main advances and describing the techniques developed. We complement the overview with references and formulations of the problem in further closely connected…

Analysis of PDEs · Mathematics 2024-12-03 Aingeru Fernández-Bertolin , Diana Stan , Luz Roncal

In recent years L-functions and their analytic properties have assumed a central role in number theory and automorphic forms. In this expository article, we describe the two major methods for proving the analytic continuation and functional…

Number Theory · Mathematics 2007-05-23 Stephen S. Gelbart , Stephen D. Miller

We give an elementary introduction to Classical Invariant Theory and its modern extension "Transcending Classical Invariant Theory", commonly known as the theory of local theta correspondence. We explain the two fundamental assertions of…

Representation Theory · Mathematics 2021-03-17 Binyong Sun , Chen-Bo Zhu

Given a group, we construct a fundamental additive functor on its orbit category. We prove that any isomorphism conjecture valid for this fundamental isomorphism functor holds for all additive functors, like K-theory, cyclic homology,…

K-Theory and Homology · Mathematics 2012-02-29 Paul Balmer , Goncalo Tabuada

In this paper, we study a Landis-type conjecture for the general fractional Schr\"{o}dinger equation $((-P)^{s}+q)u=0$. As a byproduct, we also proved the additivity and boundedness of the linear operator $(-P)^{s}$ for non-smooth…

Analysis of PDEs · Mathematics 2023-09-12 Pu-Zhao Kow

The fractional Galois ideal of [Victor P. Snaith, Stark's conjecture and new Stickelberger phenomena, Canad. J. Math. 58 (2) (2006) 419--448] is a conjectural improvement on the higher Stickelberger ideals defined at negative integers, and…

K-Theory and Homology · Mathematics 2021-03-23 Paul Buckingham , Victor Snaith

Ladders of recollements of abelian categories are introduced, and used to address three general problems. Ladders of a certain height allow to construct recollements of triangulated categories, involving derived categories and singularity…

Representation Theory · Mathematics 2020-01-13 Nan Gao , Steffen Koenig , Chrysostomos Psaroudakis

Relative theories(=closed subfunctors) are considered in exact, triangulated and extriangulated categories by Dr\"{a}xler-Reiten-Smal{\o}-Solberg-Keller, Beligiannis and Herschend-Liu-Nakaoka, respectively. We give a construction method of…

Category Theory · Mathematics 2021-11-30 Arashi Sakai

Michael Barnsley introduced a family of fractals sets which are repellers of piecewise affine systems. The study of these fractals was motivated by certain problems that arose in fractal image compression but the results we obtained can be…

Dynamical Systems · Mathematics 2019-01-15 Balázs Bárány , Michał\ Rams , Károly Simon