Erdős Number

My Erdős number is ≤ 5.

One of the shortest paths known to me:
5Stefan Schoppmannco-authored withManfred Lindneret al.JINST 14, P01027 (2019)
4Manfred Lindnerco-authored withJisuke Kuboet al.Phys. Rev. D 100, 015037 (2019)
3Jisuke Kuboco-authored withHiroshi Imaiet al.Modern Physics Letters A 5, 1663–1670 (1990)
2Hiroshi Imaico-authored withDavid M. Aviset al.J. Phys. A: Math. Gen. 38, 10971 (2005)
1David M. Avisco-authored withPaul Erdőset al.Graphs and Combinatorics 4, 207–217 (1988)

Knowledge on shorter paths will be rewarded.