The Newton polytope of the Kronecker product

التفاصيل البيبلوغرافية
العنوان: The Newton polytope of the Kronecker product
المؤلفون: Panova, Greta, Zhao, Chenchen
سنة النشر: 2023
المجموعة: Mathematics
مصطلحات موضوعية: Mathematics - Combinatorics, Mathematics - Representation Theory
الوصف: We study the Kronecker product of two Schur functions $s_\lambda\ast s_\mu$, defined as the image of the characteristic map of the product of two $S_n$ irreducible characters. We prove special cases of a conjecture of Monical--Tokcan--Yong that its monomial expansion has a saturated Newton polytope. Our proofs employ the Horn inequalities for positivity of Littlewood-Richardson coefficients and imply necessary conditions for the positivity of Kronecker coefficients.
Comment: 25 pages
نوع الوثيقة: Working Paper
URL الوصول: http://arxiv.org/abs/2311.10276
رقم الأكسشن: edsarx.2311.10276
قاعدة البيانات: arXiv