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SYMBOLS USED IN SETS | SETS

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👍 Set Symbols A set is a collection of things, usually numbers. We can list each element (or "member") of a set inside curly brackets like this: Common Symbols Used in Set Theory Symbols save time and space when writing. Here are the most common set symbols In the examples C = {1, 2, 3, 4} and D = {3, 4, 5} Symbol Meaning Example { } SET: a collection of elements {1, 2, 3, 4} A  ∪  B UNION: in A or B (or both) C  ∪  D = {1, 2, 3, 4, 5} A  ∩  B INTERSECTION: in both A and B  C  ∩  D = {3, 4} A  ⊆  B Subset: every element of A is in B. {3, 4, 5}  ⊆  D A  ⊂  B Proper Subset: every element of A is in B, but B has more elements. {3, 5}  ⊂  D A  ⊄  B Not a Subset: A is not a subset of B {1, 6}  ⊄  C A  ⊇  B Superset: A has same elements as B, or more {1, 2, 3}  ⊇  {1, 2, 3} A  ⊃  B Proper Superset: A has B's elements and more {1, 2, 3, 4}  ⊃  {1, 2, 3} A  ⊅  B Not a Superset: A is not a superset of B {1, 2, 6}  ⊅  {1, 9} A c COMPLIMENT: elemen
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WORLD'S MOST EXTREME RAILWAY | DANGEROUS RAILWAY

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THIS VIDEO CONTAINS A LOT OF INFORMATION ABOUT WORLD'S MOST EXTREME RAILWAY CONDITIONS , TRACKS , ROUTES AND MUCH MORE YOU MUST RAELLY WATCH THIS VIDEO IF YOU ARE TRAIN LOVER. YOU WILL BE AMAZED AFTER GETTING SUCH A USEFUL INFORMATION ABOUT RAILWAY. I HOPE YOU ALL WILL ENJOY THE VIDEO . THANK  YOU
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DEATH OF LORD RAMA | HOW RAMA DIED

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This incident is about the time when Sri Ram returned to Ayodhya after Lanka victory and became the king of Ayodhya. After defeating Ravan , Ram returned to Ayodhya with Sita and Lakshman. After reaching Ayodhya there were several rumours about Sita that she had been in Lanka for over 12 months 1, how can she be pavitra(not had any relationship with Ravan) anymore. Once there was a dhobi whose wife didn’t came to the house for a night , when she came back in morning the dhobi said that I am not Ram whose wife was away for 12 months(However Padma Purana states and confirms that Sita Lived in Ravana's House for the brief period of 11 Months and 14 days to be precise.) and still he accepted her. When this matter reach Ram’s court he thought of that it might be painful for my people to accept Sita. He asked Lakshman to take her to sage Valmiki’s ashram and leave her. Years after Ram did an Aswmegha yagya in which a horse is left and wherever it goes the place will be und
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Black Hole| HR6819

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This video is about the most weirdest object of the universe , that have a highly dense mass and  a great amount of  magnitude.  In this video we have talked about HR6819, closest to us . please subscribe our channel for more content. For Follow and social media click on the icon on the top left corner.
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