All infinite-dimensional separable Hilbert spaces are therefore isometrically isomorphic to . Thus every Hilbert space is isometrically isomorphic to a sequence space for some set . Furthermore, this space is isometrically isomorphic to its bidual. Every normed space can be isometrically embedded in a Banach space. Kamacite is magnetic, and isometric which makes it behave optically isometrically. The squat also isometrically uses the erector spinae and the abdominal muscles, among others. The dual of is isometrically isomorphic to . The dual of is isometrically isomorphic to when and . Hilbert proved that every isometrically embedded closed surface must have a point of positive curvature. In addition, when a subject performs a dynamic movement, supportive muscle groups can work isometrically. Further, if formula 104, then it cannot be isometrically embedded in any formula 138. When the snail grows, the esophageal gland is increasing isometrically with growth. Isometrically isomorphic normed vector spaces are identical for all practical purposes. Levels consist of a single plane, and are viewed isometrically. Thus "K"("H")* is isometrically isomorphic to "C".