physics, the problem of time is a conceptual conflict between quantum mechanics and general relativity. Quantum mechanics regards the flow of time as universal...

best-known consequence of this type is the Y2K problem, but many other milestone dates or times exist that have caused or will cause problems depending on various...

The year 2038 problem (also known as Y2038, Y2K38, Y2K38 superbug or the Epochalypse) is a time computing problem that leaves some computer systems unable...

"constant time", the running time does not have to be independent of the problem size, but an upper bound for the running time has to be independent of the...

technologists. Some applications standardize on UTC to avoid problems with clock shifts and time zone differences. Likewise, most modern operating systems...

In the theory of computational complexity, the travelling salesman problem (TSP) asks the following question: "Given a list of cities and the distances...

mechanics, time is treated as a universal and absolute parameter, differing from general relativity's notion of independent clocks. The problem of time consists...

dynamics is a theory of gravity that implements Mach's principle, developed with the specific goal to obviate the problem of time and thereby open a new...

2036/2038 problems and time proofness in various systems". 14 March 2017. Archived from the original on 21 July 2018. Retrieved 20 July 2018. University of Delaware...

In computer science, the clique problem is the computational problem of finding cliques (subsets of vertices, all adjacent to each other, also called...

problem in computer science If the solution to a problem is easy to check for correctness, must the problem be easy to solve? More unsolved problems in...

set of valid sentences is the empty set. The emptiness problem is the question of determining whether a language is empty given some representation of it...

exploring a variety of approaches to the problem of quantum gravity, the most popular being M-theory and loop quantum gravity. All of these approaches aim...

The following is a list of notable unsolved problems grouped into broad areas of physics. Some of the major unsolved problems in physics are theoretical...

question of whether SAT has a polynomial-time algorithm is equivalent to the P versus NP problem, which is a famous open problem in the theory of computing...

world Imaginary time Philosophical presentism Philosophy of space and time Problem of time Steady state Steady-state model Strata-cut animation Le Bihan...

theory, NP-complete problems are the hardest of the problems to which solutions can be verified quickly. Somewhat more precisely, a problem is NP-complete...

polynomial-time reduction is a method for solving one problem using another. One shows that if a hypothetical subroutine solving the second problem exists...

All canonical theories of general relativity have to deal with the problem of time. In quantum gravity, the problem of time is a conceptual conflict...

The knapsack problem is the following problem in combinatorial optimization: Given a set of items, each with a weight and a value, determine which items...

I'm the Problem is the fourth studio album by American country music singer Morgan Wallen. It was released through Big Loud, Republic, and Mercury Records...

computer science, a computational problem is one that asks for a solution in terms of an algorithm. For example, the problem of factoring "Given a positive...

Problem solving is the process of achieving a goal by overcoming obstacles, a frequent part of most activities. Problems in need of solutions range from...

specifically classical mechanics, the three-body problem is to take the initial positions and velocities (or momenta) of three point masses orbiting each other...

In physics, the n-body problem is the problem of predicting the individual motions of a group of celestial objects interacting with each other gravitationally...

In probability theory, the birthday problem asks for the probability that, in a set of n randomly chosen people, at least two will share the same birthday...

couldn’t truly mean everything".: 68  According to Burkeman, a crucial problem of time management is knowing "what to do when far too many things feel at...

flatness problem (also known as the oldness problem) is a cosmological fine-tuning problem within the Big Bang model of the universe. Such problems arise...

(nondeterministic polynomial time) is a complexity class used to classify decision problems. NP is the set of decision problems for which the problem instances, where...

trolley problem is a series of thought experiments in ethics, psychology, and artificial intelligence involving stylized ethical dilemmas of whether to...