Results 221 to 230 of about 2,701,936 (269)

Cohomotopy sets of (n−1)$(n-1)$‐connected (2n+2)$(2n+2)$‐manifolds for small n$n$

open access: yesTransactions of the London Mathematical Society, Volume 12, Issue 1, December 2025.
Abstract Let M$M$ be a closed orientable (n−1)$(n-1)$‐connected (2n+2)$(2n+2)$‐manifold, n⩾2$n\geqslant 2$. In this paper, we combine the Postnikov tower of spheres and the homotopy decomposition of the reduced suspension space ΣM$\Sigma M$ to investigate the (integral) cohomotopy sets π*(M)$\pi ^\ast (M)$ for n=2,3,4$n=2,3,4$, under the assumption ...
Pengcheng Li, Jianzhong Pan, Jie Wu
wiley   +1 more source

The contact cut graph and a Weinstein L$\mathcal {L}$‐invariant

open access: yesTransactions of the London Mathematical Society, Volume 12, Issue 1, December 2025.
Abstract We define and study the contact cut graph which is an analogue of Hatcher and Thurston's cut graph for contact geometry, inspired by contact Heegaard splittings (Giroux, Proceedings of the International Congress of Mathematicians, Beijing, 2002; Torisu, Internat. Math. Res. Notices (2000), 441–454).
Nickolas A. Castro   +5 more
wiley   +1 more source

On 3‐Designs From P G L ( 2 , q )

open access: yesJournal of Combinatorial Designs, Volume 33, Issue 11, Page 428-432, November 2025.
ABSTRACT The group P G L ( 2 , q ) acts 3‐transitively on the projective line G F ( q ) ∪ { ∞ }. Thus, an orbit of its action on the k‐subsets of the projective line is the block set of a 3‐ ( q + 1 , k , λ ) design. We find the parameters of the designs formed by the orbit of a block of the form 〈 θ r 〉 or 〈 θ r 〉 ∪ { 0 }, where θ is a primitive ...
Paul Tricot
wiley   +1 more source

Transfer of a novel discriminative function across functional stimulus class members in rats

open access: yesJournal of the Experimental Analysis of Behavior, Volume 124, Issue 3, November 2025.
Abstract This experiment explored a rodent model of functional class formation by assessing the transfer of a novel discriminative function across class members. Following simple successive discrimination reversal training and consistently strong probe performance indicative of the formation of two six‐member functional classes (X1–X6 and Y1–Y6 ...
Madeleine G. Mason   +5 more
wiley   +1 more source

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