16. Abelian Group - Groups - Gate 

THANK YOU SO SO VERY MUCH. I am so lucky to have come across your lecturers, brilliant.

Heyy sir , first of all I want to say thanks for uploading video and for your hard work ,keep doing it sir , your video is really helpful,sir please try to upload the video of all subject .

Hi sir. Thanks for the explanation of this. By the way, I'm confused about one thing. How is the 2x2mod5 = 4?

Hello sir, I believe you were wrong about the cell [2][2] at 4:48 as you said 1 1 2 2 2 0 0 and 3. I don't get why you said 3 while 2 + 2 mod 3 is equal to 1. Moreover, we could not have a 3 there if we wanted to as 3 doesn't belong to (Z/3Z). Please, excuse me if I missed out on something. Thank you

why missed some courses such as 15?

thanks

I have a doubt. I suppose the addition of integers forms an abelian group. Supposing elements 2 and 4, square of sum = 36 but sum of squares is 4+16=20, so it doesn't follow the equality mentioned in option c of question at 12:05 Kindly tell what wrong am I doing.

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