upper half of poincareupper half planeupper integralupper left cornerupper limitupper limit functionupper limit of an integralupper limit of summationupper normalupper numberupper real limitupper riemann sumupper right entryupper semicontinuous functionupper semicontinuous partitionupper semilatticeupper specification limitupper specification statisticupper stieltjes sumupper sumupper triangularupper triangular matrixupper triangularizationupper variationuprightupsetupset buttupwardupward biasupward concave functionupward tendencyurban planningurbanizationurnurn modelurn schemeuryson lemmausabilityusageusage rateusanceusance credituseuse depreciationuse factoruse valueuseduseful economic lifeuseful lifeusefullness