In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.

It is a short form of Sigrid , of Old Norse origin , and literally meaning " beautiful victory " , from Old Norse " sigr " ( victory ) and Old Norse " fri ́ ðr " ( beautiful ) .
It is derived from Old Norse " sigr " , which means victory , and " fri ́ dr " , which means beautiful .

Wave – particle duality is the concept in quantum mechanics that every particle or quantum entity may be partly described in terms not only of particles , but also of waves .
Wave – particle duality means that all particles show both wave and particle properties .

The Intergovernmental Group of Twenty-Four on International Monetary Affairs and Development , or The Group of 24 ( G-24 ) was established in 1971 as a chapter of the Group of 77 in order to help coordinate the positions of developing countries on international monetary and development finance issues , as well as and to ensure that their interests are adequately represented in negotiations on international monetary matters .

The Group of 24 ( G24 ) , a chapter of the G-77 , was established in 1971 to coordinate the positions of developing countries on international monetary and development finance issues and to ensure that their interests were adequately represented in negotiations on international monetary matters .