2 papers
gr-qc2025
Through the Singularity
Michael Heller, Tomasz Miller, WiesÅaw Sasin
In this work, we propose a dangerous journey -- a journey through the strong singularity from one universe to another or from inside of a black hole to its 'inverse' as a white hol…
math-ph2025
Functorial Einstein Algebras and the Malicious Singularity
Michael Heller, Tomasz Miller, Leszek Pysiak +1
Einstein algebra, the concept due to Geroch, is essentially general relativity in an algebraic disguise. We introduce the concept of Einstein-Grassmann algebra as a superalgebra (d…