“…This lemma provided an easy approach to obtain normality of a family of functions using reductio ad absurdum and has revolutionized the theory of normal families. Several extensions of Zalcman's lemma in one and several variables have been obtained (see Pang and Zalcman [28], Aladro and Krantz [1], Charak and Sharma [8] and Dovbush [14] ). Kim and Krantz [21] considered normal families of holomorphic functions and mappings on an infinite dimensional Banach space.…”
k 4 为正整数, a(z) (̸ ≡ 0)、a 1 (z) 和 b(z) 为区域 D 内的全纯函数. 若 a(z) = 0 时, f (z) ̸ = ∞ 且对于 F 中的每一个函数 f , 有 f ′ (z) + a 1 (z)f (z) − a(z)f k (z) ̸ = b(z), 则 F 在 D 内正规.
“…This lemma provided an easy approach to obtain normality of a family of functions using reductio ad absurdum and has revolutionized the theory of normal families. Several extensions of Zalcman's lemma in one and several variables have been obtained (see Pang and Zalcman [28], Aladro and Krantz [1], Charak and Sharma [8] and Dovbush [14] ). Kim and Krantz [21] considered normal families of holomorphic functions and mappings on an infinite dimensional Banach space.…”
k 4 为正整数, a(z) (̸ ≡ 0)、a 1 (z) 和 b(z) 为区域 D 内的全纯函数. 若 a(z) = 0 时, f (z) ̸ = ∞ 且对于 F 中的每一个函数 f , 有 f ′ (z) + a 1 (z)f (z) − a(z)f k (z) ̸ = b(z), 则 F 在 D 内正规.
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