is contained inis coupledis defined asis determinedis due tois foundis included inis inversely proportinalis irrelevantis isomorphic tois meantis not obligatoryis preferrable tois refered tois said to beis subject tois the same asis understandis unrestrictedis usefulisoiso cost linesisobarisobaric surfaceisochronousisochronous curveisoclinalisodiametricisogonalisogonal mappingisogonal transformationisogonicisolateisolate pointisolatedisolated criticalisolated critical pointisolated ordinal numberisolated pointisolated primary componentisolated real rootisolated setisolated singular pointisolated singularityisolated squareisolated vertexisolated zeroisolated zerosisolationisomer