Contents of Volume 149, Number 5

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Vanishing of Tor over fiber products

T. H. Freitas, V. H. Jorge Pérez, R. Wiegand and S. Wiegand.
Proc. Amer. Math. Soc. 149 (2021), 1817-1825
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MathSciNet review: 4232178

Deformation theory of contact Lie algebras as double extensions

M. A. Alvarez, M. C. Rodríguez-Vallarte and G. Salgado.
Proc. Amer. Math. Soc. 149 (2021), 1827-1836
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MathSciNet review: 4232179

Depth functions of powers of homogeneous ideals

Huy Tài Hà, Hop Dang Nguyen, Ngo Viet Trung and Tran Nam Trung.
Proc. Amer. Math. Soc. 149 (2021), 1837-1844
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Springer motives

Jens Niklas Eberhardt.
Proc. Amer. Math. Soc. 149 (2021), 1845-1856
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MathSciNet review: 4232181

Minimal free resolutions of ideals of minors associated to pairs of matrices

András Cristian Lőrincz.
Proc. Amer. Math. Soc. 149 (2021), 1857-1873
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MathSciNet review: 4232182

Fourier transforms and Ringel–Hall algebras of valued quivers

Chenyang Ma.
Proc. Amer. Math. Soc. 149 (2021), 1875-1887
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MathSciNet review: 4232183

Lech’s inequality for the Buchsbaum-Rim multiplicity and mixed multiplicity

Vinh Nguyen and Kelsey Walters.
Proc. Amer. Math. Soc. 149 (2021), 1889-1904
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MathSciNet review: 4232184

Frequently dense harmonic functions and universal martingales on trees

Evgeny Abakumov, Vassili Nestoridis and Massimo A. Picardello.
Proc. Amer. Math. Soc. 149 (2021), 1905-1918
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MathSciNet review: 4232185

On the harmonic volume of Fermat curves

Payman Eskandari and V. Kumar Murty.
Proc. Amer. Math. Soc. 149 (2021), 1919-1928
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MathSciNet review: 4232186

A note on the normal subgroup lattice of ultraproducts of finite quasisimple groups

Jakob Schneider and Andreas Thom.
Proc. Amer. Math. Soc. 149 (2021), 1929-1942
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MathSciNet review: 4232187

Schubert varieties and finite free resolutions of length three

Steven V Sam and Jerzy Weyman.
Proc. Amer. Math. Soc. 149 (2021), 1943-1955
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MathSciNet review: 4232188

Strong generators in $\textbf {D}_{\textbf {perf}}(X)$ for schemes with a separator

V. B. Jatoba.
Proc. Amer. Math. Soc. 149 (2021), 1957-1971
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MathSciNet review: 4232189

On actions of connected Hopf algebras

Ramy Yammine.
Proc. Amer. Math. Soc. 149 (2021), 1973-1983
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MathSciNet review: 4232190

Remarks on the derivation of finite energy weak solutions to the QHD system

Paolo Antonelli.
Proc. Amer. Math. Soc. 149 (2021), 1985-1997
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MathSciNet review: 4232191

Orthogonal sums in Kreĭn spaces

James Rovnyak.
Proc. Amer. Math. Soc. 149 (2021), 1999-2010
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MathSciNet review: 4232192

Blow-up rates for a fractional heat equation

R. Ferreira and A. de Pablo.
Proc. Amer. Math. Soc. 149 (2021), 2011-2018
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MathSciNet review: 4232193

Automatic real analyticity and a regal proof of a commutative multivariate Löwner theorem

J. E. Pascoe and Ryan Tully-Doyle.
Proc. Amer. Math. Soc. 149 (2021), 2019-2024
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MathSciNet review: 4232194

A local representation formula for quaternionic slice regular functions

Graziano Gentili and Caterina Stoppato.
Proc. Amer. Math. Soc. 149 (2021), 2025-2034
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MathSciNet review: 4232195

Areas spanned by point configurations in the plane

Alex McDonald.
Proc. Amer. Math. Soc. 149 (2021), 2035-2049
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A note on compact Kähler manifolds with quasi-negative holomorphic sectional curvature

Wei Xia.
Proc. Amer. Math. Soc. 149 (2021), 2051-2055
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MathSciNet review: 4232197

Further improvements of Askey-Steinig’s inequalities for finite sums involving sine and cosine

Horst Alzer and Man Kam Kwong.
Proc. Amer. Math. Soc. 149 (2021), 2057-2065
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MathSciNet review: 4232198

Non-local in time telegraph equations and very slowly growing variances

Francisco Alegría and Juan C. Pozo.
Proc. Amer. Math. Soc. 149 (2021), 2067-2080
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MathSciNet review: 4232199

Non-homogeneous extensions of Cantor minimal systems

Robin J. Deeley, Ian F. Putnam and Karen R. Strung.
Proc. Amer. Math. Soc. 149 (2021), 2081-2089
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MathSciNet review: 4232200

Semi-waves with $\Lambda$-shaped free boundary for nonlinear Stefan problems: Existence

Yihong Du, Changfeng Gui, Kelei Wang and Maolin Zhou.
Proc. Amer. Math. Soc. 149 (2021), 2091-2104
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MathSciNet review: 4232201

Uniform Lipschitz continuity of the isoperimetric profile of compact surfaces under normalized Ricci flow

Yizhong Zheng.
Proc. Amer. Math. Soc. 149 (2021), 2105-2119
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MathSciNet review: 4232202

Riesz bases of exponentials and the Bohr topology

Carlos Cabrelli, Kathryn E. Hare and Ursula Molter.
Proc. Amer. Math. Soc. 149 (2021), 2121-2131
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MathSciNet review: 4232203

Multidimensional analogues of refined Bohr’s inequality

Ming-Sheng Liu and Saminathan Ponnusamy.
Proc. Amer. Math. Soc. 149 (2021), 2133-2146
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MathSciNet review: 4232204

The positive polynomial Schur property in Banach lattices

Geraldo Botelho and José Lucas P. Luiz.
Proc. Amer. Math. Soc. 149 (2021), 2147-2160
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MathSciNet review: 4232205

Superconvexity of the heat kernel on hyperbolic space with applications to mean curvature flow

Yongzhe Zhang.
Proc. Amer. Math. Soc. 149 (2021), 2161-2166
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MathSciNet review: 4232206

Estimates for sums of eigenvalues of the free plate with nonzero Poisson’s ratio

Shan Li and Jing Mao.
Proc. Amer. Math. Soc. 149 (2021), 2167-2177
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MathSciNet review: 4232207

Brake orbits of super-quadratic Hamiltonian systems

Jiamin Xing, Xue Yang and Yong Li.
Proc. Amer. Math. Soc. 149 (2021), 2179-2185
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MathSciNet review: 4232208

The isoperimetric problem in the 2-dimensional Finsler space forms with $k=0$. II

Mengqing Zhan and Linfeng Zhou.
Proc. Amer. Math. Soc. 149 (2021), 2187-2198
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MathSciNet review: 4232209

Enlargeable metrics on nonspin manifolds

Simone Cecchini and Thomas Schick.
Proc. Amer. Math. Soc. 149 (2021), 2199-2211
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MathSciNet review: 4232210

Hyperbolic metrics on open subsets of Ptolemaic spaces with sharp parameter bounds

Neil N. Katz.
Proc. Amer. Math. Soc. 149 (2021), 2213-2220
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MathSciNet review: 4232211

Expansions of the real field by discrete subgroups of $\operatorname {Gl}_n(\mathbb {C})$

Philipp Hieronymi, Erik Walsberg and Samantha Xu.
Proc. Amer. Math. Soc. 149 (2021), 2221-2233
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MathSciNet review: 4232212

Remarks on a fractional-time stochastic equation

Mohammud Foondun.
Proc. Amer. Math. Soc. 149 (2021), 2235-2247
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MathSciNet review: 4232213

An algebraic characterization of $k$–colorability

Ramón Flores, Delaram Kahrobaei and Thomas Koberda.
Proc. Amer. Math. Soc. 149 (2021), 2249-2255
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MathSciNet review: 4232214

On the realization of symplectic algebras and rational homotopy types by closed symplectic manifolds

Aleksandar Milivojević.
Proc. Amer. Math. Soc. 149 (2021), 2257-2263
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MathSciNet review: 4232215