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  2. List of PSPACE-complete problems - Wikipedia

    en.wikipedia.org/wiki/List_of_PSPACE-complete...

    Word problem for context-sensitive language [35] Intersection emptiness for an unbounded number of regular languages [32] Regular Expression Star-Freeness [36] Equivalence problem for regular expressions [21] Emptiness problem for regular expressions with intersection. [21] Equivalence problem for star-free regular expressions with squaring. [21]

  3. Silver–Meal heuristic - Wikipedia

    en.wikipedia.org/wiki/Silver–Meal_heuristic

    The Silver–Meal heuristic is a forward method that requires determining the average cost per period as a function of the number of periods the current order is to span and stopping the computation when this function first increases.

  4. Break (work) - Wikipedia

    en.wikipedia.org/wiki/Break_(work)

    The California Supreme court ruled that employers satisfy their California Labor Code section 512 obligation to "provide" meal periods to nonexempt employees by (1) relieving employees of all duty; (2) relinquishing control over their activities and permitting them a reasonable opportunity to take an uninterrupted 30-minute break; and (3) not ...

  5. Word problem (mathematics education) - Wikipedia

    en.wikipedia.org/wiki/Word_problem_(mathematics...

    For instance, if the one solving the math word problem has a limited understanding of the language (English, Spanish, etc.) they are more likely to not understand what the problem is even asking. In Example 1 (above), if one does not comprehend the definition of the word "spent," they will misunderstand the entire purpose of the word problem.

  6. Word problem for groups - Wikipedia

    en.wikipedia.org/wiki/Word_problem_for_groups

    The word problem is a well-known example of an undecidable problem. If A {\displaystyle A} is a finite set of generators for G {\displaystyle G} , then the word problem is the membership problem for the formal language of all words in A {\displaystyle A} and a formal set of inverses that map to the identity under the natural map from the free ...

  7. Dynamic lot-size model - Wikipedia

    en.wikipedia.org/wiki/Dynamic_lot-size_model

    From these t* alternatives, select the minimum cost policy for periods 1 through t* Proceed to period t*+1 (or stop if t*=N) Because this method was perceived by some as too complex, a number of authors also developed approximate heuristics (e.g., the Silver-Meal heuristic [3]) for the problem.

  8. Working time - Wikipedia

    en.wikipedia.org/wiki/Working_time

    That break, typically of 1 or 2 hours, has been kept in the working culture because in the post-civil-war period most workers had two jobs to be able to sustain their families. Following this tradition, in small and medium-sized cities, restaurants and businesses shut down during this time period of 2-5 for retail and 4-8 for restaurants.

  9. List of NP-complete problems - Wikipedia

    en.wikipedia.org/wiki/List_of_NP-complete_problems

    This is a list of some of the more commonly known problems that are NP-complete when expressed as decision problems. As there are thousands of such problems known, this list is in no way comprehensive. Many problems of this type can be found in Garey & Johnson (1979).