# Article

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Keywords:
Hahn-Banach extension property; topological vector space
Summary:
An elementary construction for an abundance of vector topologies $\xi$ on a fixed infinite dimensional vector space $E$ such that $(E,\xi )$ has not the Hahn-Banach extension property but the topological dual $(E,\xi )'$ separates points of $E$ from zero is given.
References:
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