向量 p范数的凹凸性证明
Suppose . Show that the function
with is concave. This includes as special cases and the harmonic mean
显然,当 p>=1时,向量的范数是凸的。
Suppose . Show that the function
with is concave. This includes as special cases and the harmonic mean
显然,当 p>=1时,向量的范数是凸的。