Humpback smooth-hound Humpback smooth-hound The humpback smooth-hound ("Mustelus whitneyi") is a houndshark of the family Triakidae. It is found on the continental shelves of the tropical southeast Pacific, from Peru to southern Chile, between latitudes 3° S and 54° S, at depths between . Its conservation status is considered to be "vulnerable" by the IUCN. The humpback smooth-hound is a small shark growing to a length of up to . It has a sturdy body with a moderately long, broad, sharply angled snout and large eyes, set widely apart. The mouth is fairly long and the upper lip furrows are longer than
Smooth scheme only if the morphism "X" → Spec "k" is smooth. A smooth scheme over a field is regular and hence normal. In particular, a smooth scheme over a field is reduced. Define a variety over a field "k" to be an integral separated scheme of finite type over "k". Then any smooth separated scheme of finite type over "k" is a finite disjoint union of smooth varieties over "k". For a smooth variety "X" over the complex numbers, the space "X"(C) of complex points of "X" is a complex manifold, using the classical (Euclidean) topology. Likewise, for a smooth variety