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الثبات الدوراني أو اللاتباين الدوراني هو إحدى خواص الدوال المعرفة على فضاء الجداء الداخلي التي لا تخضع لتغير عتد تطبيق تحويلات دورانية ما على هذا الفضاء. (ar) In mathematics, a function defined on an inner product space is said to have rotational invariance if its value does not change when arbitrary rotations are applied to its argument. (en) 在數學裏,給予一個定義於內積空間的函數,假若對於任意旋轉,函數的參數值可能會改變,但是函數的數值仍舊保持不變,則稱此性質為旋轉不變性(rotational invariance),或旋轉對稱性(rotational symmetry),因為函數對於旋轉具有對稱性。例如,假設以xyz-參考系的原點為固定點,任意旋轉xyz-參考系,而函數 的數值保持不變,因此,函數 對於任意旋轉具有不變性,或對於任意旋轉具有對稱性。 在物理學裏,假若物理系統的性質跟它在空間的取向無關,則這系統具有旋轉不變性。根據諾特定理,假若物理系統的作用量具有旋轉不變性,則角動量守恆。 根據物理學家多年來仔細研究的結果,到目前為止,所有的物理基礎定律都具有旋轉不變性。 (zh) |
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الثبات الدوراني أو اللاتباين الدوراني هو إحدى خواص الدوال المعرفة على فضاء الجداء الداخلي التي لا تخضع لتغير عتد تطبيق تحويلات دورانية ما على هذا الفضاء. (ar) In mathematics, a function defined on an inner product space is said to have rotational invariance if its value does not change when arbitrary rotations are applied to its argument. (en) 在數學裏,給予一個定義於內積空間的函數,假若對於任意旋轉,函數的參數值可能會改變,但是函數的數值仍舊保持不變,則稱此性質為旋轉不變性(rotational invariance),或旋轉對稱性(rotational symmetry),因為函數對於旋轉具有對稱性。例如,假設以xyz-參考系的原點為固定點,任意旋轉xyz-參考系,而函數 的數值保持不變,因此,函數 對於任意旋轉具有不變性,或對於任意旋轉具有對稱性。 在物理學裏,假若物理系統的性質跟它在空間的取向無關,則這系統具有旋轉不變性。根據諾特定理,假若物理系統的作用量具有旋轉不變性,則角動量守恆。 根據物理學家多年來仔細研究的結果,到目前為止,所有的物理基礎定律都具有旋轉不變性。 (zh) |
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ثبات دوراني (ar) Rotational invariance (en) 旋轉不變性 (zh) |
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