Raghavendra Tripathi

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20232026

most citedA note on Erdős matrices and Marcus\unicode{x2013}Ree inequality

2 citations · 2 across the 13 of their papers we have counts for

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math.CO2025

Number of orbits of $k$ -subsets of permutations

Ludovick Bouthat, Raghavendra Tripathi

Let $S_{n}$ denote the symmetric group of order $n$ . Say that two subsets $x, y \subseteq S_{n}$ are \emph{equivalent} if there exist permutations $g_{1}, g_{2} \in S_{n}$ such that $g_1xg_2=y…

math.OA2025

Khintchine inequalities, trace monoids and Turán-type problems

Patrick Oliveira Santos, Raghavendra Tripathi, Pierre Youssef

We prove scalar and operator-valued Khintchine inequalities for mixtures of free and tensor-independent semicircle variables, interpolating between classical and free Khintchine-ty…

math.MG2025★ 2 cited

A note on Erdős matrices and Marcus\unicode{x2013}Ree inequality

Aman Kushwaha, Raghavendra Tripathi

In 1959, Marcus and Ree proved that any bistochastic matrix $A$ satisfies $Δ_{n} (A) := max_{σ \in S_{n}} \sum_{i = 1}^{n} A (i, σ (i)) - \sum_{i, j = 1}^{n} A (i, j)^{2} \geq 0$ . Erdős asked to charac…

Number of orbits of k-subsets of permutations

Khintchine inequalities, trace monoids and Turán-type problems

A note on Erdős matrices and Marcus\unicode{x2013}Ree inequality

Number of orbits of $k$ -subsets of permutations