Bingwu Wang

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We consider nonlinear mappings f : X → Y between Banach spaces and study the notion of restrictive metric regularity of f around some point ¯ x, that is, metric regularity of f from X into the metric space E = f (X). Some sufficient as well as necessary and sufficient conditions for restrictive metric regularity are obtained, which particularly include an(More)
Nicotine has practical applications relating to smoking cessation devices and alternative nicotine products. Genetic manipulation for increasing nicotine content in cultivated tobacco (Nicotiana tabacum L.) may be of value for industrial purposes, including the possibility of enhancing the efficiency of nicotine extraction. Biotechnological approaches have(More)
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