18 problems.
- Subrings of the Gaussian integers
- Entire functions satisfying harmonic-oscillator and double-angle identities
- A Hermitian matrix has the same kernel as its square
- A perturbed monotone sequence has a finite limit
- Finite groups whose every subgroup is a retract
- Zeros of a quartic in an annulus
- Factorization \(P=USV^T\) of a real matrix with \(P^3=P\)
- Vanishing Cesàro means with \(\limsup a_n/b_n=\infty\)
- Involutions in a nonabelian group of order \(16\) containing \(C_2^3\)
- A polynomial orbit is never dense in the complex plane
- Diagonalizability of consecutive powers of a matrix
- Closed coefficient sets map to closed linear-combination sets
- Prime ideals of a product of two fields
- Sum of residues of the reciprocal of a rapidly growing entire function
- Possible rank triples for three matrices summing to zero
- A continuous function with a finite limit at infinity is uniformly continuous
- Irreducible rational polynomials with all roots real
- A holomorphic map with \(\abs{f}\le1\) on the unit circle has a fixed point in the closed disk