Scepter Valley
Robert P. Munafo, 2023 Apr 18.
Also known as Seahorse Valley West, this is a colloquial name for the cusps between R2.1/2a and R2.1/2.1/2a, particularly the upper one, R2.1/2.C(1/2)-. See also Double Scepter valley.
When distinguishing features on opposing sides of the valley, the side closer to R2.1/2a retains the name "scepter valley" while the side closer to R2.1/2.1/2a is called dragon valley. The embedded Julia sets found in an island's "scepter valley" are sometimes called scepter medallions.
This picture shows the reason for the name: a seahorse with "scepters".
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R2F(1/2F(13/27B)B), one of the denizens of "Scepter Valley".
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See R2.1/2.C(1/2) for more illustrations.
revisions: 20080131 oldest on record; 20230417 link to "dragon valley" and the "medallion" type
From the Mandelbrot Set Glossary and Encyclopedia, by Robert Munafo, (c) 1987-2024.
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This page was written in the "embarrassingly readable" markup language RHTF, and was last updated on 2023 Apr 19. s.27