Tootfinder

The Centrality Paradox: Why Your Friends Are Always More Important
Rajat Subhra Hazra, Evgeny Verbitskiy
https://arxiv.org/abs/2507.13059 https://

The Centrality Paradox: Why Your Friends Are Always More Important
We revisit the classical friendship paradox which states that on an average one's friends have at least as many friends as oneself and generalize it to a variety of network centrality measures. In particular, we show that for any irreducible, undirected graph $G$, the "friends-average" of degree, eigenvector-centrality, walk-count, Katz, and PageRank centralities exceeds the global average. We show that the result follows from the variational characterisation of the eigenvector corresponding to…

These one-pagers on common AiTM phishing kits are great! #cybersecurity
From: @…
https://

The Republican Majority on the Senate Banking Committee released a press release Friday confirming that they were intentionally eliminating
the “duplicative Office of Financial Research (OFR)”.
According to sources I’ve talked to in the Senate, Republican committee members have shown little concern with the elimination of the Office of Financial Research.
They also seem aware of the concerns over SOFR, because both their “one pager” and “section by section” documents clai…

The “One Big Beautiful Bill Act” Eliminates the Office of Financial Research—Threatening the Stability of the Treasury Market
Early last week I started working on a piece on why the Federal Reserve didn’t step in during the Trump Tariff Financial Panic. The basic idea of that piece is simply that “repo rates”- the interest rate at which you can, in essence, borrow funds with treasury securities

Accuracy and componentwise accuracy in multilinear PageRank
Mehdi Najafi Kalyani, Federico Poloni
https://arxiv.org/abs/2506.18356 https://

Accuracy and componentwise accuracy in multilinear PageRank
We study the stability with respect to perturbations and the accuracy of numerical algorithms for computing solutions to the multilinear PageRank problem $\mathbf{x} = (1-α)\mathbf{v} + α\mathcal{P} \mathbf{x}^2$. Our results reveal that the solution can be more stable with respect to perturbations and numerical errors with respect to the classical bounds for nonlinear systems of equations (based on the norm of the Jacobian). In detail, one can obtain bounds for the minimal solution which ign…