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[UNDELETED, but still CLOSED]

The question Checking concavity of a highly non linear function

seems to have been closed over-hastily; those with sufficient rep can see fedja's comments, and I am prepared to believe quite readily that if fedja thinks it is non-trivial, it is non-trivial.

I would like to nominate this for re-opening.

[UNDELETED and then REOPENED]

The question Checking concavity of a highly non linear function

seems to have been closed over-hastily. Those with sufficient rep can see fedja's comments, and I am prepared to believe quite readily that if fedja thinks it is non-trivial, it is non-trivial.

I would like to nominate this for re-opening.

[UNDELETED]

The question Checking concavity of a highly non linear function

seems to have been closed over-hastily; those with sufficient rep can see fedja's comments, and I am prepared to believe quite readily that if fedja thinks it is non-trivial, it is non-trivial.

I would like to nominate this for re-opening.

[UNDELETED, but still CLOSED]

The question Checking concavity of a highly non linear function

seems to have been closed over-hastily; those with sufficient rep can see fedja's comments, and I am prepared to believe quite readily that if fedja thinks it is non-trivial, it is non-trivial.

I would like to nominate this for re-opening.

The question Checking concavity of a highly non linear function

seems to have been closed over-hastily; those with sufficient rep can see fedja's comments, and I am prepared to believe quite readily that if fedja thinks it is non-trivial, it is non-trivial. Unfortunately, since it got auto-deleted, no one can see the question.

I would like to nominate this for re-opening.

[UNDELETED]

The question Checking concavity of a highly non linear function

seems to have been closed over-hastily; those with sufficient rep can see fedja's comments, and I am prepared to believe quite readily that if fedja thinks it is non-trivial, it is non-trivial.

I would like to nominate this for re-opening.