scholarly journals Fast amortized multi-point evaluation

2021 ◽  
pp. 101574
Author(s):  
Joris van der Hoeven ◽  
Grégoire Lecerf
Keyword(s):  
2021 ◽  
Vol 2021 (6) ◽  
Author(s):  
Dionysios Anninos ◽  
Beatrix Mühlmann

Abstract We explore the conjectured duality between a class of large N matrix integrals, known as multicritical matrix integrals (MMI), and the series (2m − 1, 2) of non-unitary minimal models on a fluctuating background. We match the critical exponents of the leading order planar expansion of MMI, to those of the continuum theory on an S2 topology. From the MMI perspective this is done both through a multi-vertex diagrammatic expansion, thereby revealing novel combinatorial expressions, as well as through a systematic saddle point evaluation of the matrix integral as a function of its parameters. From the continuum point of view the corresponding critical exponents are obtained upon computing the partition function in the presence of a given conformal primary. Further to this, we elaborate on a Hilbert space of the continuum theory, and the putative finiteness thereof, on both an S2 and a T2 topology using BRST cohomology considerations. Matrix integrals support this finiteness.


1999 ◽  
Vol 42 (2) ◽  
pp. 139-148 ◽  
Author(s):  
José Bonet ◽  
Paweł Dománski ◽  
Mikael Lindström

AbstractEvery weakly compact composition operator between weighted Banach spaces of analytic functions with weighted sup-norms is compact. Lower and upper estimates of the essential norm of continuous composition operators are obtained. The norms of the point evaluation functionals on the Banach space are also estimated, thus permitting to get new characterizations of compact composition operators between these spaces.


JSIAM Letters ◽  
2014 ◽  
Vol 6 (0) ◽  
pp. 29-32 ◽  
Author(s):  
Hideyuki Azegami ◽  
Kohji Ohtsuka ◽  
Masato Kimura

2016 ◽  
Vol 37 (3) ◽  
pp. 362-368 ◽  
Author(s):  
Sergio Maimone ◽  
Gaia Caccamo ◽  
Giovanni Squadrito ◽  
Angela Alibrandi ◽  
Francesca Saffioti ◽  
...  

1995 ◽  
Vol 38 (2) ◽  
pp. 237-241 ◽  
Author(s):  
T. J. Ransford

AbstractWe give a simple proof that, if X is a Lindelöf topological space, and A is an algebra of continuous real-valued functions on X which is inverse-closed, local and z-regular, then every character on A is a point evaluation. We also give a number of examples to illustrate both the applications of this theorem and its limitations.


2011 ◽  
Vol 10 (1) ◽  
pp. 77-85 ◽  
Author(s):  
Jinyang Deng ◽  
Maureen Bender ◽  
Steve Selin

Sign in / Sign up

Export Citation Format

Share Document