Project supported by the National Natural Science Foundation of China
Let P be a pseudo-arc in 2-sphere S2. A homeomorphism h : P →→ P is called essentially extendable iff there exists an imbedding φ:P → S2 such that the homeomorphism φ hφ-1: φ(...
This note aims at proving the following results: Theorem 1. Let f(z) be a transcendental meromorphic function and ψ(z) ((?)0) be a meromorphic function which satisfies T(r, ψ)=o{T(r,f)}, then as r→∞, we have,
Ⅰ. INTRODUCTION In this paper the aurora borealis data from 1535 to 1625 have been used to derive the period of reappearance of auroras. We reached the conclusion that the rate of solar rotation before the Maunder mi...
Recently, a number of objective forecast schemes have been made both at home and abroad. In the statistical models, however, the supposition of the mutual independence of the forecast quantities of different periods o...