When Tisha B'Av falls on Shabbat and is postponed to Sunday, do the restrictions of Tisha B'Av apply to the entire preceding Shabbat?

Synopsis

When Tisha B'Av is deferred due to falling on Shabbat, the learning restrictions for mourning topics on the eve apply, but the extent of restrictions remains disputed among authorities.

Late Acharonim
Lenient
Strict
Lesser cited
Major authority

Discussion

Discussion coming soon.

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