K-space

K-space can refer to:

• Another name for the frequency domain but referring to a spatial rather than temporal frequency
• Reciprocal space for the Fourier transform of a spatial function
• Momentum space for the vector space of possible values of momentum for a particle
• K-space in magnetic resonance imaging
• In topology, a k-space is another name for a compactly generated space
• In functional analysis, a K-space is an F-space such that every twisted sum by the real line splits.
• K-Space (band), a British-Siberian music ensemble