Thousands of fans traveled to Graceland on August 16, 2012âthe 35th anniversary of Elvis Presley's deathâfor a special vigil in honor of the King of Rock 'n' Roll. During the gathering, fans held lit candles and stood outside of Presley's home.
A section of a tangent vector bundle is a vector field. In the mathematical field of topology, a section (or cross section) of a fiber bundle is a continuous right inverse of the function. In other words, if is a fiber bundle over a base space, : then a section of that fiber bundle is a continuous map, such that.
When cut in longitudinal section, smooth muscle nuclei appear very long and sometimes wiggly (due to contraction). In cross-sectioned smooth muscle, only a fraction of the fibers display nuclei. Recall that each smooth muscle fiber is a single cell, each with its own nucleus. In each such cell, the nucleus occupies only a small proportion of the cell's total length. So nuclei appear only in a similarly small proportion of the fibers cut by any single section. A very small bundle of smooth muscle can be particularly inconspicuous when cut in cross section.