# problem

 related words approach condition prove difficult lack true reason complex avoid achieve instance simply fact combination simple key completely affect situation improve
 related documents Computational complexity theory Word problem for groups Boolean satisfiability problem NP-complete Linear programming Travelling salesman problem Knapsack problem Subset sum problem Artificial intelligence P-complete Chess problem Quantum computer P = NP problem Problem of evil NP (complexity) Decision problem PSPACE-complete NP-hard Numerical analysis Optimization (mathematics)
 related topics {math, number, function} {theory, work, human} {ship, engine, design} {company, market, business} {disease, patient, cell} {system, computer, user} {math, energy, light} {woman, child, man} {car, race, vehicle} {government, party, election} {specie, animal, plant} {island, water, area} {build, building, house} {black, white, people} {country, population, people} {law, state, case} {war, force, army} {city, large, area} {album, band, music} {film, series, show}