Template:Are You Sure/April 7: Difference between revisions
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• ... that computer scientist '''[[Donald Sarason (nonfiction)|Donald Sarason]]''' pioneered the abstract treatment of contractive containment and established a fruitful connection between the spaces Hb and the ranges of certain Toeplitz operators? | • ... that computer scientist '''[[Donald Sarason (nonfiction)|Donald Sarason]]''' pioneered the abstract treatment of contractive containment and established a fruitful connection between the spaces Hb and the ranges of certain Toeplitz operators? | ||
• ... that today is '''[[Abuse of notation (nonfiction)|National Abuse of Notation Day]]''' in the United States and [[New Minneapolis, Canada]]? | |||
Revision as of 06:02, 7 April 2020
• ... that physicist Ernst Ruhmer investigated practical applications making use of the light-sensitivity properties of selenium, which he employed in developing wireless telephony using line-of-sight optical transmission, sound-on-film audio recording, and television transmission over wires?
• ... that computer scientist Donald Sarason pioneered the abstract treatment of contractive containment and established a fruitful connection between the spaces Hb and the ranges of certain Toeplitz operators?
• ... that today is National Abuse of Notation Day in the United States and New Minneapolis, Canada?