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We prove the Mond conjecture for wave fronts which states that the number of parameters of a frontal versal unfolding is less than or equal to the number of spheres in the image of a stable frontal deformation with equality if the wave…

Algebraic Geometry · Mathematics 2024-07-24 C. Muñoz-Cabello , J. J. Nuño-Ballesteros , R. Oset Sinha

Recently Z.W.Sun found over hundred conjectured formulas for 1/pi. Many of them were proved by H.H.Chan, J.Wan andW.Zudilin (see [3], [8] in the paper). Here we show that several other formulas in [6] are simple transformations of known…

Number Theory · Mathematics 2011-12-22 Gert Almkvist , Alexander Aycock , appendix by Arne Meurman

We consider the operation to crush a subset of a manifold to one-point when the result of the crushing also be a manifold. Then the Poincare conjecture is split to two problems; for any closed orientable 3-manifold which is not homeomorphic…

General Mathematics · Mathematics 2015-11-11 Yuri Shimizu

We show that Pinney's equation [2] with a constant coefficient can be reduced to its linear part by a simple change of variables. Also, Pinney's original solution is simplified slightly.

Analysis of PDEs · Mathematics 2019-02-08 Philip Korman

In this paper we give a proof of Lichnerowicz Conjecture for compact simply connected manifolds which is intrinsic in the sense that it avoids the {\it Nice Embeddings} into eigen spaces of the Laplacian. Even if one wants to use these…

dg-ga · Mathematics 2008-02-03 Akhil Ranjan

The purpose of this short note is to exhibit a new connection between the Heisenberg Uncertainty Principle on the line and the Breitenberger Uncertainty Principle on the circle, by considering the commutator of the multiplication and…

Functional Analysis · Mathematics 2013-07-19 Nils Byrial Andersen

In this note the authors have raised the question regarding the validity of the main result in [1] by setting an example.

General Mathematics · Mathematics 2016-11-22 Moumita Chiney , S. K. Samanta

We extend the modularity lifting result of the arXiv:1111.2804 to allow Galois representations with some ramification at p. We also prove modularity mod 2 and 5 of certain Galois representations. We use these results to prove many new cases…

Number Theory · Mathematics 2013-05-22 Payman L Kassaei , Shu Sasaki , Yichao Tian

Denoting by ${\mathcal L}_d(m_0,m_1,...,m_r)$ the linear system of plane curves passing through $r+1$ generic points $p_0,p_1,...,p_r$ of the projective plane with multiplicity $m_i$ (or larger) at each $p_i$, we prove the…

Algebraic Geometry · Mathematics 2007-05-23 F. Monserrat

Due to some results by John P. D Angelo and Dusty Grundmeier about CR- mappings the main results of my 2001 paper about recurrences for some sequences of binomial sums can be simplified.

Combinatorics · Mathematics 2013-02-19 Johann Cigler

We present a new proof of the existence of Morley sequences in simple theories. We avoid using the Erd\H{o}s-Rado theorem and instead use only Ramsey's theorem and compactness. The proof shows that the basic theory of forking in simple…

Logic · Mathematics 2017-02-22 Sebastien Vasey

In this work we prove the undecidability (and $\Sigma^0_1$-completeness) of several theories of semirings with fixed points. The generality of our results stems from recursion theoretic methods, namely the technique of effective…

Logic · Mathematics 2025-12-23 Anupam Das , Abhishek De , Stepan L. Kuznetsov

Let $E/\mathbb{Q}$ be an elliptic curve of level $N$ and rank equal to $1$. Let $p$ be a prime of ordinary reduction. We experimentally study conjecture $4$ of B. Mazur and J. Tate in his article "Refined Conjectures of the Birch and…

Number Theory · Mathematics 2017-09-06 Francisco X. Portillo-Bobadilla

A more detailed derivation of the Heisenberg uncertainty principle from the certainty principle is given.

Quantum Physics · Physics 2007-05-23 D. A. Arbatsky

Based on the recent work of Arsovski, we confirm a conjecture of Feng, Sun, and Xiang, and we give a shortened proof of Snevily's conjecture.

Combinatorics · Mathematics 2011-04-25 Gergely Harcos , Gyula Károlyi , Géza Kós

In 1971, Ray and Singer proposed an analytic equivalent of a classical topological invariant, the R-torsion. This Ray-Singer torsion has had many ramifications in mathematics and physics. I will describe the background, the Ray-Singer…

Differential Geometry · Mathematics 2024-01-26 John Lott

We present a new proof of Witten's conjecture. The proof is based on the analysis of the relationship between intersection indices on moduli spaces of complex curves and Hurwitz numbers enumerating ramified coverings of the 2-sphere.

Algebraic Geometry · Mathematics 2015-06-26 M. E. Kazarian , S. K. Lando

We give a new independent proof of a generalised version of the theorem by Rashevskii, which appeared in [Uch. Zapiski Ped. Inst. K. 2 (1938), 83 -- 94] and from which the classical Chow-Rashevskii Theorem follows as a corollary. The proof…

Differential Geometry · Mathematics 2024-07-18 Cristina Giannotti , Andrea Spiro , Marta Zoppello

Rejoinder on Causal Inference Through Potential Outcomes and Principal Stratification: Application to Studies with ``Censoring'' Due to Death by D. B. Rubin [math.ST/0612783]

Statistics Theory · Mathematics 2007-06-13 Donald B. Rubin

The theory of random real numbers is exceedingly well-developed, and fascinating from many points of view. It is also quite challenging mathematically. The present notes are intended as no more than a gateway to the larger theory. They…

Computational Complexity · Computer Science 2012-09-14 Daniel Osherson , Scott Weinstein
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