Results 11 to 20 of about 261 (203)

On exponential sums over prime numbers [PDF]

open access: yesJournal of the Australian Mathematical Society. Series A. Pure Mathematics and Statistics, 1989
AbstractIn this article we establish an estimate for a sum over primes that is the analogue of an estimate for a sum over consecutive integers which has proved to be very useful in applications of exponential sums to problems in number theory.
Sárközy, A., Stewart, C. L.
openaire   +2 more sources

Explicit upper bounds for exponential sums over primes [PDF]

open access: yesMathematics of Computation, 2000
We give explicit upper bounds for linear trigonometric sums over primes.
Daboussi, Hedi, Rivat, Joel
openaire   +3 more sources

Exponential sums over primes in an arithmetic progression [PDF]

open access: yesProceedings of the American Mathematical Society, 1985
In 1979 A. F. Lavrik obtained some estimates for exponential sums over primes in arithmetic progressions by an analytic method. In the present paper we give an estimate for the same sums, comparable with Lavrik’s estimate, by means of elementary methods like Vaughan’s identity.
A. BALOG, PERELLI, ALBERTO
openaire   +2 more sources

On certain exponential sums over primes

open access: yesJournal of Number Theory, 2009
Let \(f(x)\) be a real valued polynomial of degree \(k\geq 4\) and irrational leading coefficient \(\alpha\). Exponential sums of the form \[ S:=\sum_{p\leq N} (\log p) e(f(p)) \] have received a lot of interest. \textit{G. Harman} proved in [Mathematika 28, 249--254 (1981; Zbl 0465.10029)] that if \(q\) is the denominator of a convergent of \(\alpha\),
Maier, H., Sankaranarayanan, A.
openaire   +2 more sources

Exponential sum estimates over prime fields [PDF]

open access: yesInternational Journal of Number Theory, 2019
In this paper, we prove some extensions of recent results given by Shkredov and Shparlinski on multiple character sums for some general families of polynomials over prime fields. The energies of polynomials in two and three variables are our main ingredients.
Koh, Doowon   +3 more
openaire   +2 more sources

EXPONENTIAL SUMS OVER POINTS OF ELLIPTIC CURVES WITH RECIPROCALS OF PRIMES [PDF]

open access: yesMathematika, 2011
We consider exponential sums with x-coordinates of points qG and q−1G where G is a point of order T on an elliptic curve modulo a prime p and q runs through all primes up toN (with gcd (q,T)=1 in the case of the points q−1G). We obtain a new bound on exponential sums with q−1G and correct an imprecision in the work of W.D. Banks, J.B. Friedlander, M.Z.
Ostafe, Alina, Shparlinski, Igor E
openaire   +2 more sources

Repairing Reed-Solomon Codes Over Prime Fields via Exponential Sums

open access: yesIEEE Transactions on Information Theory, 2023
This paper presents two repair schemes for low-rate Reed-Solomon (RS) codes over prime fields that can repair any node by downloading a constant number of bits from each surviving node. The total bandwidth resulting from these schemes is greater than that incurred during trivial repair; however, this is particularly relevant in the context of leakage ...
Roni Con   +3 more
openaire   +3 more sources

Real exponential sums over primes and prime gaps

open access: yes, 2023
27 pages, submitted to Annals of ...
openaire   +2 more sources

New estimates for exponential sums over multiplicative subgroups and intervals in prime fields [PDF]

open access: yesJournal of Number Theory, 2020
Let ${\mathcal H}$ be a multiplicative subgroup of $\mathbb{F}_p^*$ of order $H>p^{1/4}$. We show that $$ \max_{(a,p)=1}\left|\sum_{x\in {\mathcal H}} {\mathbf{\,e}}_p(ax)\right| \le H^{1-31/2880+o(1)}, $$ where ${\mathbf{\,e}}_p(z) = \exp(2 πi z/p)$, which improves a result of Bourgain and Garaev (2009).
Daniel Di Benedetto   +5 more
openaire   +2 more sources

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

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