Yahoo Mail down? Current status and problems - Downdetector
Real-time overview of problems with Yahoo Mail. Is the service down or do you have problems logging in? We'll tell you what is going on.
Yahoo Mail down? Current status and problems - Downdetector
Real-time overview of problems with Yahoo Mail. Is the service down or do you have problems logging in? We'll tell you what is going on.
Many hard LeetCode problems are easy constraint problems
Points: 679 | Comments: 533 | Author: mpweiher
On S. Mazur's problems 8 and 88 from the Scottish Book
The paper discusses Problems 8 and 88 posed by Stanislaw Mazur in the Scottish Book. It turns out that negative solutions to both problems are immediate consequences of the results of Section 5 of my paper "Estimates of functions of power bounded o...
ProgrammingHero1/100-plus-python-coding-problems-with-solutions
A list of python problems for beginners and intermediate developers (⭐ 934)
Knowledge revision in systems based on an informed tree search strategy : application to c…
Many real world problems can be expressed as optimisation problems. Solving this kind of problems means to find, among all possible solutions, the one that maximises an evaluation function. One approach to solve this kind of problem is to use an info...
mgechev/google-interview-preparation-problems
leetcode problems I solved to prepare for my Google interview. (⭐ 3168)
A Constraint Driven Solution Model for Discrete Domains with a Case Study of Exam Timetabl…
Many science and engineering applications require finding solutions to planning and optimization problems by satisfying a set of constraints. These constraint problems (CPs) are typically NP-complete and can be formalized as constraint satisfaction p...
Some hard families of parameterised counting problems
We consider parameterised subgraph-counting problems of the following form: given a graph G, how many k-tuples of its vertices have a given property? A number of such problems are known to be #W[1]-complete; here we substantially generalise some of t...
Average-Case Hardness of Parity Problems: Orthogonal Vectors, k-SUM and More
This work establishes conditional lower bounds for average-case {\em parity}-counting versions of the problems $k$-XOR, $k$-SUM, and $k$-OV. The main contribution is a set of self-reductions for the problems, providing the first specific distribution...
PacktPublishing/Java-Coding-Problems
Java Coding Problems, published by Packt (⭐ 848)
Yahoo Mail down? Current status and problems - Downdetector
Real-time overview of problems with Yahoo Mail. Is the service down or do you have problems logging in? We'll tell you what is going on.
Exact algorithms for budgeted prize-collecting covering subgraph problems
We introduce a class of budgeted prize-collecting covering subgraph problems. For an input graph with prizes on the vertices and costs on the edges, the aim of these problems is to find a connected subgraph such that the cost of its edges does not ex...
A Bayesian Nonparametric Approach to Species Sampling Problems with Ordering
Species-sampling problems (SSPs) refer to a vast class of statistical problems calling for the estimation of (discrete) functionals of the unknown species composition of an unobservable population. A common feature of SSPs is their invariance with re...
Selection Principles and special sets of reals: Open problems
We give a selection of major open problems involving selective properties, diagonalizations, and covering properties for sets of real numbers. This is a revision of the version published as a chapter in the book \textbf{Open Problems in Topology II...
Stability of Nonhomogeneous Split Equality and Split Feasibility Problems with Possibly No…
By applying some techniques of set-valued and variational analysis, we study solution stability of nonhomogeneous split equality problems and nonhomogeneous split feasibility problems, where the constraint sets need not be convex. Necessary and suffi...
Garden optimization problems for benchmarking quantum annealers
We benchmark the 5000+ qubit system Advantage coupled with the Hybrid Solver Service 2 released by D-Wave Systems Inc. in September 2020 by using a new class of optimization problems called garden optimization problems known in companion planting. Th...
Research Problems in Function Theory (New Edition)
A new edition of Walter K. Hayman's 'Research Problems in Function Theory' (1967), containing over five hundred function theory and complex analysis problems, along with all progress updates over the last 51 years. The final publication will also inc...
Gradient Estimates for the Perfect and Insulated Conductivity Problems with Multiple Inclu…
In this paper, we study the perfect and the insulated conductivity problems with multiple inclusions imbedded in a bounded domain in $\mathbb{R}^n, n\ge 2$. For these two extreme cases of the conductivity problems, the gradients of their solutions...
Problems for problem session
Below are the problems that I formulated at Open Problems Session of {\it Workshop on Group Actions on Rational Varieties}, McGill University and University of Montreal, Canada, March 2002. To appear in: "Affine Algebraic Geometry" conference Proce...