Publications (66)
Nemotron 3 Ultra: Open, Efficient Mixture-of-Experts Hybrid Mamba-Transformer Model for Agentic Reasoning
NVIDIA, :, Aaron Blakeman +571
We introduce Nemotron 3 Ultra, a 550 billion total and 55 billion active parameter Mixture-of-Experts Hybrid Mamba-Attention language model. We pre-trained Nemotron 3 Ultra on 20 t…
Bound States of String Networks and D-branes
Alok Kumar, Rashmi Rekha Nayak, Kamal Lochan Panigrahi
We show the existence of non-threshold bound states of (p, q) string networks and D3-branes, preserving 1/4 of the full type IIB supersymmetry, interpreted as string networks disso…
Orientifold and Type II Dual Pairs
Alok Kumar
In this paper we present a symmetry of a toroidally compactified type II string theory. This symmetry has the interpretaion that it interchanges the left and the right-moving world…
String Network and U-Duality
Sandip Bhattacharyya, Alok Kumar, Subir Mukhopadhyay
We discuss the generalization of recently discovered BPS configurations, corresponding to the planar string networks, to non-planar ones by considering the U-duality symmetry of ty…
Voronovskaja type asymptotic approximation by general gamma type operators
Alok Kumar
In the present paper, we studied the voronovskaja type theorem for general Gamma type operators. Also, we obtain an error estimate for general Gamma type operators.
p-p' Branes in PP-wave Background
Anindya Biswas, Alok Kumar, Kamal L. Panigrahi
We present several supergravity solutions corresponding to both Dp, as well as Dp-Dp' systems, in NS-NS and R-R PP-wave background originating from AdS_3 times S^3 times R^4. The D…