Results 61 to 70 of about 1,582,878 (315)

On spectral Cantor-Moran measures and a variant of Bourgain's sum of sine problem [PDF]

open access: yesAdvances in Mathematics, 2019
In this paper, we show that if we have a sequence of Hadamard triples $\{(N_n,B_n,L_n)\}$ with $B_n\subset \{0,1,..,N_n-1\}$ for $n=1,2,...$, except an extreme case, then the associated Cantor-Moran measure $$ \begin{aligned} \mu = \mu(N_n,B_n ...
Li-Xiang An, Xiaoye Fu, Chun-Kit Lai
semanticscholar   +1 more source

A sieve method for shifted convolution sums [PDF]

open access: yesDuke Mathematical Journal, 2009
To appear in Duke Math. J.
openaire   +4 more sources

Transcriptional network analysis of PTEN‐protein‐deficient prostate tumors reveals robust stromal reprogramming and signs of senescent paracrine communication

open access: yesMolecular Oncology, EarlyView.
Combining PTEN protein assessment and transcriptomic profiling of prostate tumors, we uncovered a network enriched in senescence and extracellular matrix (ECM) programs associated with PTEN loss and conserved in a mouse model. We show that PTEN‐deficient cells trigger paracrine remodeling of the surrounding stroma and this information could help ...
Ivana Rondon‐Lorefice   +16 more
wiley   +1 more source

MATRIKS ATAS RING DERET PANGKAT TERGENERALISASI MIRING

open access: yesBarekeng, 2021
Let R be a ring with unit elements,  strictly ordered monoids, and  a monoid homomorphism. Formed , which is a set of all functions from S to R with  are Artin and narrow.
Siti Rugayah   +2 more
doaj   +1 more source

Ramanujan’s convolution sum twisted by Dirichlet characters

open access: yesInternational Journal of Number Theory, 2019
We find formulas for convolutions of sum of divisor functions twisted by the Dirichlet character [Formula: see text], which are analogous to Ramanujan’s formula for convolution of usual sum of divisor functions. We use the theory of modular forms to prove our results.
Aygin, Zafer Selcuk, Hong, Nankun
openaire   +2 more sources

CONVOLUTION SUMS ARISING FROM DIVISOR FUNCTIONS [PDF]

open access: yesJournal of the Korean Mathematical Society, 2013
Let s(N) denote the sum of the sth powers of the positive divisors of a positive integer N and let e s(N) = P djN ( 1) d 1 d s with d, N, and s positive integers.
Aeran Kim, Daeyeoul Kim, Li Yan
openaire   +1 more source

Infrared laser sampling of low volumes combined with shotgun lipidomics reveals lipid markers in palatine tonsil carcinoma

open access: yesMolecular Oncology, EarlyView.
Nanosecond infrared laser (NIRL) low‐volume sampling combined with shotgun lipidomics uncovers distinct lipidome alterations in oropharyngeal squamous cell carcinoma (OPSCC) of the palatine tonsil. Several lipid species consistently differentiate tumor from healthy tissue, highlighting their potential as diagnostic markers.
Leonard Kerkhoff   +11 more
wiley   +1 more source

On the operations of sequences in rings and binomial type sequences

open access: yes, 2018
Given a commutative ring with identity $R$, many different and interesting operations can be defined over the set $H_R$ of sequences of elements in $R$. These operations can also give $H_R$ the structure of a ring.
Barbero, Stefano   +2 more
core   +1 more source

Ramanujan’s Tau-Function and Convolution Sums

open access: yesEuropean Journal of Theoretical and Applied Sciences
We study certain type of convolution sums involving an arbitrary arithmetic function f, which it is applied to Ramanujan’s tau function when f coincides with the sum of divisors function. 
R. Sivaraman   +2 more
openaire   +1 more source

Estimates for character sums with various convolutions [PDF]

open access: yesActa Arithmetica, 2017
We provide estimates for sums of the form \[\left|\sum_{a\in A}\sum_{b\in B}\sum_{c\in C} (a+b+c)\right|\] and \[\left|\sum_{a\in A}\sum_{b\in B}\sum_{c\in C}\sum_{d\in D} (a+b+cd)\right|\] when $A,B,C,D\subset \mathbb F_p$, the field with $p$ elements and $ $ is a non-trivial multiplicative character modulo $p$.
openaire   +2 more sources

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