output
19992026
most citedOn a regular charged black hole with a nonlinear electric source

132 citations

researchers with a paper here
collaborating institutions

104 papers

cs.DB2026

Extending the (Elementary) Mathematical Data Model and MatBase with two new constraint types: inexistence and anti-existence

Christian Mancas

This research paper introduces two new constraint types and four subtypes of database constraints added to our (Elementary) Mathematical Data Model, which are the duals of the exis…

cs.DB2026

Translating database mathematical schemes into relational database software applications with MatBase

Christian Mancas, Diana Christina Mancas

We present a pseudocode algorithm for translating our (Elementary) Mathematical Data Model schemes into relational ones and associated sets of non-relational constraints, used by M…

physics.gen-ph2025★ 3 cited

Gravity and the Superposition Principle

Hristu Culetu

The relation between gravity and quantum mechanics is investigated in this work. The link is given by the wave packet expansion process, rooted from the Uncertainty Principle. The…

cs.DB2024

The (Elementary) Mathematical Data Model Revisited

Christian Mancas

This paper presents the current version of our (Elementary) Mathematical Data Model ((E)MDM), which is based on the naïve theory of sets, relations, and functions, as well as on th…

gr-qc2024★ 1 cited

On geodesics in spherical Rindler space

Hristu Culetu

The geodesics in various spherical Rindler frames are investigated. A display of some kinematical quantities of the spacetime is given. The constant acceleration from the metric ac…

cs.DB2024

On Enforcing Existence and Non-Existence Constraints in MatBase

Christian Mancas

Existence constraints were defined in the Relational Data Model, but, unfortunately, are not provided by any Relational Database Management System, except for their NOT NULL partic…