error functionerror generationerror of an approximationerror of estimateerror of input dataerror of measurementerror of the first kinderror of the second kinderror of type ierror of type iierror probabilityerror rangeerror rateerror spaceerror sum of squareserror termerror theoremerrors of input dataescalationescalatorescapeescape velocityescompteescribeescribedescribed circleescribed circle of a triangleesential singularityessentialessential constantessential singular pointessential singularityessential spectrumessential supremumessentiallyessentially bounded measurable functionessentially complete classessentially indirect proofestablishestalonesteem needsestimable parameterestimateestimate of errorestimated process averageestimated regression lineestimationestimation accuracyestimation errorestimation of accuracy