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Dan Petersen
Dan Petersen
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This question has been answered in the comments. The former is the fibered product and the latter is the Weil restriction. The former always exists, but the latter does not. I am reposting this as a CW answer so thatanswer; if it gets upvoted, this question will not reappear on the front page.

This question has been answered in the comments. The former is the fibered product and the latter is the Weil restriction. The former always exists, but the latter does not. I am reposting this as a CW answer so that this question will not reappear on the front page.

This question has been answered in the comments. The former is the fibered product and the latter is the Weil restriction. The former always exists, but the latter does not. I am reposting this as a CW answer; if it gets upvoted, this question will not reappear on the front page.

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Dan Petersen
Dan Petersen
  • 40.2k
  • 2
  • 114
  • 201

This question has been answered in the comments. The former is the fibered product and the latter is the Weil restriction. The former always exists, but the latter does not. I am reposting this as a CW answer so that this question will not reappear on the front page.