位い相そう空くう間かん

noun

phase space

Physics term: the space of all possible states of a system, where each state is represented by a point.

• 古こ典てん力りき学がくでは、粒りゅう子しの位い置ちと運うん動どう量りょうで位い相そう空くう間かんが定てい義ぎされる。

  In classical mechanics, phase space is defined by the position and momentum of particles.

noun

topological space

Mathematics term: a set equipped with a topology, allowing the definition of continuity and convergence.

• 位い相そう空くう間かんの定てい義ぎには、開かい集しゅう合ごうの概がい念ねんが不ふ可か欠けつです。

  The concept of open sets is essential for the definition of a topological space.