The Norse dwarves are highly significant entities within Norse mythology. They are the makers of most of the artefacts of the gods, both Aesir and Vanir. Their dwelling places are two of the nine worlds upon the world-ash Yggdrasil, that of Nidavellir and of Svartalfheim.
They are known also as svartalfir, or "dark elves".
... as "either of those element(s) of the field whose square equals b2 - 4ac". In some fields, some elements have no square roots and some have two; only zero has just ...