activity
20022021
most citedFeynman integrals and motives of configuration spaces

13 citations · 32 across the 7 of their papers we have counts for

collaborators

8 papers

cs.CC2021★ 2 cited

Algorithmic Complexities in Backpropagation and Tropical Neural Networks

Ozgur Ceyhan

In this note, we propose a novel technique to reduce the algorithmic complexity of neural network training by using matrices of tropical real numbers instead of matrices of real nu…

math.AG2015

Position Space Feynman quadrics and their motives

Ozgur Ceyhan

In this note, we introduce and study position space Feynman quadrics that are the loci of divergences of the position space Feynman integrals for Euclidean massless scalar quantum…

math-ph2013

Algebraic renormalization and Feynman integrals in configuration spaces

Ozgur Ceyhan, Matilde Marcolli

This paper continues our previous study of Feynman integrals in configuration spaces and their algebro-geometric and motivic aspects. We consider here both massless and massive Fey…

math.AG2012★ 4 cited

Feynman integrals and periods in configuration spaces

Ozgur Ceyhan, Matilde Marcolli

We describe differential forms representing Feynman amplitudes in configuration spaces of Feynman graphs, and regularization and evaluation techniques, for suitable chains of integ…

math-ph2010★ 13 cited

Feynman integrals and motives of configuration spaces

Ozgur Ceyhan, Matilde Marcolli

We formulate the problem of renormalization of Feynman integrals and its relation to periods of motives in configuration space instead of momentum space. The algebro-geometric sett…

math-ph2010★ 1 cited

Deformations of QFTs and Connes-Marcolli's renormalization group in Epstein-Glaser scheme

Ozgur Ceyhan

This short note aims to describe the deformations of QFTs and give an action of the same pro-algebraic group which appears in Connes-Marcolli's setting, on the finite QFTs co…

math.AG2007

Chow groups of the moduli spaces of weighted pointed stable curves of genus zero

Ozgur Ceyhan

The moduli space of weighted pointed stable curves of genus zero is stratified according to the degeneration types of such curves. We show that the homology groups of t…

math.AG2002★ 12 cited

On moduli of pointed real curves of genus zero

Ozgur Ceyhan

We introduce the moduli space of pointed real curves of genus zero and give its natural stratification. The strata of correspond to real curve…