wolfram mathematica function of unknown list

Birch–Tate conjecture on the relation between the order of the center of the Steinberg group of the ring of integers of a number field to the field's Dedekind zeta function.Zauner conjectured that analogous structures exist in complex Hilbert spaces of all finite dimensions. In the Bloch sphere representation of a qubit, a SIC-POVM forms a regular tetrahedron. Unsolved Problems on Mathematics for the 21st Century In some cases, the lists have been associated with prizes for the discoverers of solutions. Various mathematicians and organizations have published and promoted lists of unsolved mathematical problems. Lists of unsolved problems in mathematics 6.1 Books discussing problems solved since 1995.1 Lists of unsolved problems in mathematics.Although this list may never be comprehensive, the problems listed here vary widely in both difficulty and importance. This list is a composite of notable unsolved problems mentioned in previously published lists, including but not limited to lists considered authoritative.

Prizes are often awarded for the solution to a long-standing problem, and some lists of unsolved problems, such as the Millennium Prize Problems, receive considerable attention. Some problems belong to more than one discipline and are studied using techniques from different areas. These problems come from many areas of mathematics, such as theoretical physics, computer science, algebra, analysis, combinatorics, algebraic, differential, discrete and Euclidean geometries, graph theory, group theory, model theory, number theory, set theory, Ramsey theory, dynamical systems, and partial differential equations. Many mathematical problems have been stated but not yet solved. You can help by adding missing items with reliable sources. Both would be useful in different ways.This is a dynamic list and may never be able to satisfy particular standards for completeness. I often find myself wanting to see what variables/constants are undefined in a large set of differential equations, is there a function that will do this for me?Īs an example, for the following ODE (as a list, as I usually have more than one), eqn= from the above example (FullForm of the Variables hack above may help towards this).

Wolfram mathematica function of unknown list