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The integers do not form a group under multiplication. As you noticed, the multiplicative inverse of any integer other than 1 or –1 is not an integer. You migh
by jacobolus 7y ago
The integers do not form a group under multiplication. As you noticed, the multiplicative inverse of any integer other than 1 or –1 is not an integer.
You might be thinking of the rational numbers (excluding zero).
- james_s_tayler 7y agoWoops. You're right. Looks like I need to play Group or Not Group. https://youtu.be/qvx9TnK85bw https://youtu.be/qvx9TnK85bw But then even for addition what's the inverse of 0? -0?