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116 papers
Interpreting Negation in GPT-2: Layer- and Head-Level Causal Analysis
Abdullah Al Mofael, Lisa M. Kuhn, Ghassan Alkadi +1
Negation remains a persistent challenge for modern language models, often causing reversed meanings or factual errors. In this work, we conduct a causal analysis of how GPT-2 Small…
Spectra of Regular Quantum Trees: Rogue Eigenvalues and Dependence on Vertex Condition
Zhaoxia W. Hess, Stephen P. Shipman
We investigate the spectrum of Schrödinger operators on finite regular metric trees through a relation to orthogonal polynomials that provides a graphical perspective. As the Robin…
On subgroup perfect codes in Cayley graphs
Junyang Zhang, Sanming Zhou
A perfect code in a graph is a subset of such that no two vertices in are adjacent and every vertex in is adjacent to exactly one vertex in…
Each n-by-n matrix with n>1 is a sum of 5 coninvolutory matrices
Ma. Nerissa M. Abara, Dennis I. Merino, Vyacheslav I. Rabanovich +2
An complex matrix is called coninvolutory if and skew-coninvolutory if (which implies that is even). We prove that each matrix of s…
Finite groups with star-free noncyclic graphs
Xuanlong Ma, Gary L. Walls, Kaishun Wang
For a finite noncyclic group , let $\Cyc(G)$ be a set of elements of such that is cyclic for each of . The noncyclic graph of is a graph…
Redescription and validation of Bothriechis supraciliaris (Serpentes: Viperidae)
Alejandro Solórzano, Luis D. Gómez, Julián Monge-Nájera +1
The populations of pitvipers from south western Costa Rica, have traditionally been identified as Bothriechis schlegelii (Berthold). However, in 1954 E. H. Taylor described one spe…