currying of mapping spaces bijective for locally compact spaces

1. Proposition

Let 20231107-currying_of_mapping_spaces_bijective_for_locally_compact_spaces_3e3122d320f7bffebdc8b0f35f367104b8445b3e.svg, 20231107-currying_of_mapping_spaces_bijective_for_locally_compact_spaces_c369ec44162417e211640a8ba58bff3935984253.svg and 20231107-currying_of_mapping_spaces_bijective_for_locally_compact_spaces_af38f926f7f15df7115d86b1debf0d15907543ab.svg be topological spaces, such that 20231107-currying_of_mapping_spaces_bijective_for_locally_compact_spaces_a5ca1e1e9495f4799a571f0308c9e1ed89eec7a0.svg is locally compact Then for the mapping spaces equipped with the compact open topology, Currying

20231107-currying_of_mapping_spaces_bijective_for_locally_compact_spaces_b94fbc7848c0f2ca358be50ff40e3fe69d221b85.svg

is bijective

2. Proof

2.1. injective

since currying inside category set is an isomorphism, we conclude, that it is injective here.

2.2. surjective

Let 20231107-currying_of_mapping_spaces_bijective_for_locally_compact_spaces_9028c2951b2a2abc9bbc5a2f0d4d8729ff7eee76.svg. Then $q is continuous and furthermore for

20231107-currying_of_mapping_spaces_bijective_for_locally_compact_spaces_d8d98ce4fbbf5c62b2c6a99cd12e6616ba1a8850.svg

or

20231107-currying_of_mapping_spaces_bijective_for_locally_compact_spaces_c37c90ca0c6a66b76b7a802dc86f57ed69ecbf8e.svg

Here 20231107-currying_of_mapping_spaces_bijective_for_locally_compact_spaces_5461866a7289ba4c56a10a82a5622bfbdcb4ae22.svg is continuous as composition of continuous maps (cf. evaluation map from a locally compact as continuous map)

Furthermore, by construction (since they agree on all values)

20231107-currying_of_mapping_spaces_bijective_for_locally_compact_spaces_8064ce4b3470f9e1b52855991533cc10f0f8ee36.svg

Date: nil

Author: Anton Zakrewski

Created: 2024-10-13 So 19:04