Geodesic
Local polynomials are polynomials
Studia Mathematica, Tome 115 (1995) no. 2, pp. 105-107 Cet article a éte moissonné depuis la source Institute of Mathematics Polish Academy of Sciences

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We prove that a function f is a polynomial if G◦f is a polynomial for every bounded linear functional G. We also show that an operator-valued function is a polynomial if it is locally a polynomial. 
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     author = {C. K. Fong},
     title = {Local polynomials are polynomials},
     journal = {Studia Mathematica},
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     language = {en},
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C. K. Fong. Local polynomials are polynomials. Studia Mathematica, Tome 115 (1995) no. 2, pp. 105-107. doi: 10.4064/sm-115-2-105-107

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