For a magma chamber to form, the right conditions have to exist, including particular temperatures, pressures, and structural formations. Magma chambers are under such great pressure that, over time, they can eventually break the rock surrounding the chamber.
A normed vector space is a pair (V, âÂ·â) where V is a vector space and âÂ·â a norm on V.A seminormed vector space is a pair (V, p) where V is a vector space and p a seminorm on V.imilarly, for any semi-normed vector space we can define the distance between two vectors u and v as â u â v â. This turns the seminormed space into a pseudometric space (notice this is weaker than a metric) and allows the definition of notions such as continuity and convergence.
In signal processing and statistics, David Donoho referred to the zero norm with quotation marks. Following Donoho's notation, the zero norm of x is simply the number of non-zero coordinates of x, or the Hamming distance of the vector from zero. When this norm is localized to a bounded set, it is the limit of p-norms as p approaches 0.