Projects per year

## Personal profile

### Research interests

I am working in probability, more specifically on models at the intersection between discrete and continuous probability.

My research fits into three main research areas. First of all I am interested in spatial population models that are inspired by evolutionary biology and are often described in terms of stochastic partial differential equations. Here, I am trying to understand the large scale behaviour of interfaces that arise for example between different types. Secondly, I am working on stochastic processes in random environments. Currently I am working on branching processes whose behaviour is influenced by local inhomogeneities. Finally, I am interested in evolving random graphs and stochastic processes that are defined on random graphs.

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## Projects 2016 2019

- 1 Active

### Cumulants, concentration and superconcentration

1/12/16 → 31/08/19

Project: Research-related funding › International Collaboration

## Research Output 2008 2019

- 15 Article

### Fluctuations in a general preferential attachment model via Stein's method

Betken, C., Döring, H. & Ortgiese, M., 24 Jan 2019, (Accepted/In press) In : Random Structures and Algorithms.Research output: Contribution to journal › Article

### A new look at duality for the symbiotic branching model

Hammer, M., Ortgiese, M. & Vollering, F., 24 Aug 2018, In : Annals of Probability. 46, 5, p. 2800-2862 63 p.Research output: Contribution to journal › Article

### Local neighbourhoods for first-passage percolation on the configuration model

Dereich, S. & Ortgiese, M., 19 Nov 2018, In : Journal of Statistical Physics. 173, 3-4, p. 485–501 17 p.Research output: Contribution to journal › Article

### Near critical preferential attachment networks have small giant components

Eckhoff, M., Morters, P. & Ortgiese, M., 1 Nov 2018, In : Journal of Statistical Physics. 173, 3-4, p. 663-703 41 p.Research output: Contribution to journal › Article

### Scaling limit and ageing for branching random walk in Pareto environment

Ortgiese, M. & Roberts, M., 11 Jul 2018, In : Annales de l'Institut Henri Poincaré: Probabilités et Statistiques. 54, 3, p. 1291-1313Research output: Contribution to journal › Article

## Thesis

## Stochastic processes in random environment

Author: Ortgiese, M., 1 Sep 2009Supervisor: Morters, P. (Supervisor)

Student thesis: Doctoral Thesis › PhD