A Positive Answer on Nirenberg’s Problem on Expansive Mappings in Hilbert Spaces
نویسندگان
چکیده
Nirenberg proposed a problem as to whether or not continuous and expansive operator T : X ⟶ (where id="M2"> is Hilbert space) surjective if id="M3"> R ∘ ≠ ∅ . I shall give positive answer for the provided that id="M4"> unbounded. For contents related this paper, reader referred remarks study of Asfaw (2021). The present paper gives complete has been open about 47 years.
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ژورنال
عنوان ژورنال: Abstract and Applied Analysis
سال: 2022
ISSN: ['1687-0409', '1085-3375']
DOI: https://doi.org/10.1155/2022/9487405