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Translingual[edit]

Character
Unicode name DOUBLE-STRUCK CAPITAL H
Code point U+210D
Entity number ℍ
Unicode block Letterlike Symbols
[U+210C] [U+210E]

Etymology[edit]

The first letter of the surname of William Rowan Hamilton (1805–1865), written in blackboard bold.

Symbol[edit]

  1. (mathematics) The symbol for the set of quaternions.