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  • The harp, the instrument after which the nabla symbol is named Nabla is used in mathematics to denote the del operator. It also can refer to a connection in differential geometry and to the backward difference operator in the. — “Nabla symbol - Wikipedia, the free encyclopedia”,
  • The original page is located at [edit] I'm registered since 2004-07-31. I've been in and out, generally for months in a row, ever since. So don't be surprised if I'm either here for a while, or gone for long. — “User:Nabla - Wikipedia, the free encyclopedia”,
  • Nabla (instrument), a Hebrew stringed instrument after which that symbol was named, see Nabla, tradename of a type of rail fastening system (of roughly. — “Nabla - Wikipedia, the free encyclopedia”,

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