2 papers
math.CO2024
Lower Bounds for Multicolor Star-Critical Ramsey Numbers
Mark Budden, Yash Shamsundar Khobragade, Siddhartha Sarkar
The star-critical Ramsey number is a refinement of the concept of a Ramsey number. In this paper, we give equivalent criteria for which the star-critical Ramsey number vanishes. Ne…
math.CO2023
Embeddable partial Hadamard matrices related to the projective planes
Hadi Kharaghani, Sho Suda, Yash Shamsundar Khobragade
The existence of a projective plane of order , where is a prime power, is shown to be equivalent to the existence of a balancedly multi-splittable embeddable…