boundary condition of elastic curveboundary conditionsboundary crossingboundary currentboundary current systemboundary disputeboundary elementboundary element methodboundary incidentboundary layerboundary layer flowboundary layer rollsboundary layer separationboundary lineboundary lubricationboundary makingboundary of a setboundary pointboundary riderboundary settingboundary spannerboundary spanningboundary value problemboundary violationsboundarylessboundaryless careerboundedbounded abovebounded belowbounded bybounded contextbounded convergence theorembounded derivativesbounded functionbounded intervalbounded inverse theorembounded linear operatorbounded linear transformationbounded measurable functionbounded measure spacebounded metric spacebounded operatorbounded rationalitybounded sequencebounded setbounded variablesbounded variationboundedly convergence sequencebounden dutybounder