डबल-स्ट्रक एन-आर्य सारांश ⅀

‘Double-Struck N-Ary Summation’ is a letter belonging to the modern Greek alphabet. It represents the sound ] in writing. It was that very letter which the Latin S and the Cyrillic С originated from. The uppercase letter is used as a symbol of summation in mathematics. As for physics, there it denotes a special type of elementary particles called hyperons. The numerical value of sigma is 200.

Unicode offers various sigma versions, including the doubly outlined sign of N-Ary Summation, which you can copy from this page. For most general purposes, the standard uppercase sigma Σ is likely the most suitable, as it's widely used in mathematics and physics.

संकेत ‘डबल-स्ट्रक एन-आर्य सारांश’ ‘डबल-ऑपरेटर बड़े ऑपरेटर’ उपखंड में शामिल है, जो ‘पत्र-जैसे प्रतीक’ खंड का हिस्सा है, और यह Unicode संस्करण 3.2 के भाग के रूप में 2002 में स्वीकृत हुआ था।