activity
20122020
most citedA Possible Intuitive Derivation of the Kerr Metric in Orthogonal Form Based On Ellipsoidal Metric Ansatz

1 citations · 5 across the 8 of their papers we have counts for

collaborators

8 papers

math.CT2020★ 1 cited

Cauchy completeness for DG-categories

Branko Nikolić, Ross Street, Giacomo Tendas

We go back to the roots of enriched category theory and study categories enriched in chain complexes; that is, we deal with differential graded categories (DG-categories for short)…

math.CT2020

Monoidal centres and groupoid-graded categories

Branko Nikolić, Ross Street

We denote the monoidal bicategory of two-sided modules (also called profunctors, bimodules and distributors) between categories by ; the tensor product is cartesian p…

math.CT2019★ 1 cited

Note on filtered colimits of Hilbert spaces

Branko Nikolić, Alessandra Di Pierro

The category of Hilbert spaces and contractions has filtered colimits, and tensoring preserves them. We also discuss (problems with) bounded maps.

math.CT2018★ 1 cited

Strictification tensor product of 2-categories

Branko Nikolić

Given 2-categories and , let denote the 2-category of lax functors, lax natural transformations and modifications…

math.CT2018

Comonadic base change for enriched categories

Branko Nikolić, Ross Street

For our concepts of change of base and comonadicity, we work in the general context of the tricategory whose objects are bicategories and whose morph…

math.CT2018

Hopf rings for grading and differentials

Branko Nikolić, Ross Street

In the category of abelian groups, Pareigis constructed a Hopf ring whose comodules are differential graded abelian groups. We show that this Hopf ring can be obtained by combining…

math.CT2017★ 1 cited

Cauchy completeness and causal spaces

Branko Nikolić

Following Lawvere's description of metric spaces using enriched category theory, we introduce a change in the base of enrichment that allows description of some aspects of (relativ…

gr-qc2012★ 1 cited

A Possible Intuitive Derivation of the Kerr Metric in Orthogonal Form Based On Ellipsoidal Metric Ansatz

Branislav D. Nikolić, Milan R. Pantić

In this paper we show that it is possible to derive the Kerr solution in an alternative, intuitive way, based on physical reasoning and starting from an orthogonal metric ansatz ha…