86 citations · 90 across the 6 of their papers we have counts for
6 papers
A curious identity for Bernoulli numbers
Daniel B. Grunberg, Hao Pan, Zhi-Wei Sun
We prove a curious identity for the Bernoulli numbers.
Stock price jumps: news and volume play a minor role
Armand Joulin, Augustin Lefevre, Daniel Grunberg +1
In order to understand the origin of stock price jumps, we cross-correlate high-frequency time series of stock returns with different news feeds. We find that neither idiosyncratic…
On asymptotics, Stirling numbers, Gamma function and polylogs
Daniel B. Grünberg
We apply the Euler--Maclaurin formula to find the asymptotic expansion of the sums , ~, ~, ~$\sum 1/k^…
Gromov-Witten Theory and Threshold Corrections
Daniel Grunberg
We present an overview of Gromov-Witten theory and its links with string theory compactifications, focussing on the GW potential as the generating function for topological string a…
Integrality of Open Instantons Numbers
Daniel Grunberg
We prove the integrality of the open instanton numbers in two examples of counting holomorphic disks on local Calabi-Yau threefolds: the resolved conifold and the degenerate $ ¶\ti…
N=4 Characters in Gepner Models, Orbits and Elliptic Genera
Daniel B. Grunberg
We review the properties of characters of the N=4 SCA in the context of a non-linear sigma model on , how they are used to span the orbits, and how the orbits produce topologic…