Top Open Problems
Provisional editorial order for Top Open Problems: Millennium Prize Problems first, followed by assessed difficulty tiers; the unassessed remainder keeps its previous catalogue order. About rankings
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- Math-2151 Maximum number of critical periods
- Math-2152 Reversible quadratic systems
- Math-2153 A piecewise-linear Hilbert sixteenth-type problem
- Math-2154 A Markus–Yamabe problem for differential equations
- Math-2155 A Markus–Yamabe/La Salle problem for discrete dynamical systems
- Math-2156 Random linear differential equations
- Math-2157 Triangular billiards
- Math-2158 Loewner's conjecture
- Math-2159 A moments problem I
- Math-2160 A moments problem II
- Math-2161 Around Kouchnirenko's conjecture I
- Math-2162 Around Kouchnirenko's conjecture II
- Math-2163 Conjecture of multiplicative persistence
- Math-2164 The 196 conjecture
- Math-2165 Arc in a Cremer Julia set
- Math-2166 Components after removing a Cremer fixed point
- Math-2167 Periodic orbits near a Cremer point
- Math-2168 Periodic point on a Siegel-disk boundary
- Math-2169 Diameter of Mandelbrot limbs
- Math-2170 Lebesgue ergodicity on a spherical Julia set
- Math-2171 Full-plane Julia sets in the exponential family
- Math-2172 Parameter spaces of cosine and sine families
- Math-2173 Local connectivity of quadratic Julia sets
- Math-2174 Herman-ring retracts for Hénon maps
- Math-2175 Simple Polygonalizations
- Math-2176 Planar Euclidean Maximum TSP
- Math-2177 Monochromatic Triangles
- Math-2178 Dynamic Planar Nearest Neighbors
- Math-2179 Boundaries of Groups and Kleinian Groups — Problem 3
- Math-2180 Boundaries of Groups and Kleinian Groups — Problem 6
- Math-2181 Boundaries of Groups and Kleinian Groups — Problem 8
- Math-2182 Boundaries of Groups and Kleinian Groups — Problem 9
- Math-2183 Boundaries of Groups and Kleinian Groups — Problem 11
- Math-2184 Boundaries of Groups and Kleinian Groups — Problem 12
- Math-2185 Boundaries of Groups and Kleinian Groups — Problem 17
- Math-2186 Boundaries of Groups and Kleinian Groups — Problem 20
- Math-2187 Boundaries of Groups and Kleinian Groups — Problem 21
- Math-2188 Boundaries of Groups and Kleinian Groups — Problem 25
- Math-2189 Boundaries of Groups and Kleinian Groups — Problem 26
- Math-2190 Boundaries of Groups and Kleinian Groups — Problem 28
- Math-2191 Boundaries of Groups and Kleinian Groups — Problem 29
- Math-2192 Boundaries of Groups and Kleinian Groups — Problem 35
- Math-2193 Boundaries of Groups and Kleinian Groups — Problem 36
- Math-2194 Boundaries of Groups and Kleinian Groups — Problem 38
- Math-2195 Boundaries of Groups and Kleinian Groups — Problem 39
- Math-2196 Boundaries of Groups and Kleinian Groups — Problem 42
- Math-2197 Boundaries of Groups and Kleinian Groups — Problem 44
- Math-2198 Boundaries of Groups and Kleinian Groups — Problem 52
- Math-2199 Boundaries of Groups and Kleinian Groups — Problem 62
- Math-2200 Kaplansky's Conjectures