Problems 1

Lecture 8
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[@slaozeren8742]

Thank you, sir.

[@vijaysinghchauhan7079]

At 13:00, R' does not have additive identity in it.

[@adgjpmwt]

at 23:37 1=2^0 but 0 is not natural no.

[@deepakgaira3586]

Yes, you are right
This is not a ring. As per sir defined earlier but others prefer ring without unity. In that case it is ring.

[@Aryan-dg1dw]

Ring without unity ke casee me bhi ring nhi hai because additive closure faild ½+½=1 but 1 does not belong to R