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math.NT2025
The Fibonacci--Redheffer matrix and its properties
Aristides V. Doumas, Panayiotis J. Psarrakos
A Redheffer--type matrix with Fibonacci entries is defined, and the determinant and spectral properties of this matrix are studied. Also, more general Redheffer--type matrices are…
math.PR2025
Dixie cup problem in an interlacing process
Aristides V. Doumas
The double Dixie cup problem of D.J. Newman and L. Shepp is a well-known variant of the coupon collector problem, where the object of study is the number of coupons that a collecto…