Definition of a Subgroup and Proof that the Kernel is a Subgroup

We define what it means for H to be a subgroup of G and give clear criteria which you can follow in order to prove that a given subset is a subgroup. Then we prove that the kernel of f is a subgroup of G. I hope this helps someone learning abstract algebra.

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[mingmiao]

Awesome example! Could you add all your abstract algebra videos in the playlist?

[inejunta]

For the love of all math holiness make live study with me lame videos.

[az]

Grupo y nucleo de un homeomorfísmo con su imagen . Si se lo preguntas a chatgpt y le pides un ejemplo con saluda en markdown te sorprenderá.