subduction

Noun

subduction (countable and uncountable, plural subductions)

1. The action of being pushed or drawn beneath another object.
2. The process of one tectonic plate moving beneath another and sinking into the mantle at a convergent plate boundary.
   • Therefore, both a mantle plume and also the subductions of the oceanic plates may have mutually contributed to create the magmatic zone.2000, Ki-Hong Chang, Sun-Ok Park, Soobum Chang, “Upper Mesozoic unconformity-bounded units of Korean Peninsula with Koguryo Magmatic Province”, in H. Okada, N. J. Mateer, editors, Cretaceous...
   • Evidence for a subduction polarity flip is clear in the Irish Caledonides, where the S-dipping slab beneath the Lough Nafooey arc (Dewey & Ryan 1990; Clift & Ryan 1994) became a N-dipping subduction zone after the Grampian Orogeny.2003, Peter D. Clift, Hans Schouten, Amy E. Draut, “A general model for arc-continent collision and subduction polarity reversal from Taiwan and the Irish Caledonides”, in Robert D. Larter, Philip T....
3. The act of subducting or taking away.
   • threatened the subduction of his own presence1651 (indicated as 1652), Joseph Hall, “The Invisible World Discovered to Spiritual Eyes, and Reduced to Useful Meditation. […]”, in Josiah Pratt, editor, The Works of the Right Reverend Father in...
4. Arithmetical subtraction.
   • the other Operation of Arithmetick , namely , Subductiona. 1677 (date written), Matthew Hale, The Primitive Origination of Mankind, Considered and Examined According to the Light of Nature, London: […] William Godbid, for William Shrowsbery, […]...
5. A surjection between diffeological spaces such that the target is identified as the pushforward of the source.
   • Accordingly, a diffeological principal S¹-bundle over a diffeological space X is a subduction π : P → X and a smooth map τ satisfying the same conditions; see [30] for a thorough discussion.2012, Konrad Waldorp, “A construction of string 2-group models using a transgression-regression technique”, in Clara L. Aldana, Maxim Braverman, Bruno Iochum, Carolina Neira Jiménez, editors...
   • Subductions (art. 1.46) express a global behavior of some surjections. As we localized the notion of induction and then obtained the notion of local induction (art. 2.15), the notion of subduction can be localized, or refined, as well, and leads to the concept of local subduction. Exercise 61, p....2013, Patrick Iglesias-Zemmour, Diffeology, American Mathematical Society, page 59