Can bitul reshut be performed after Shabbat has begun (after nightfall)?

What verbal formula is required for bitul reshut (renouncing domain) to be effective?

4 opinions

If bitul reshut is performed without specifying the house, does it include renunciation of the house domain or only the courtyard?

3 opinions

Must the person who performed bitul lock his house to prevent inadvertent carrying?

2 opinions

If the renouncing party also explicitly renounces domain of his house, may all parties carry freely between the house and courtyard?

2 opinions

Does renting one's domain (instead of renouncing it) to a Jewish neighbor permit carrying on Shabbat?

5 opinions

When many courtyard residents who made an eruv renounce their domain to one who did not, can they carry freely afterward?

3 opinions

When one of two courtyard residents renounces domain to the other, does the renouncing party also become permitted to carry?

3 opinions

When two people forgot to make an eruv, can they each renounce domain to permit carrying in the courtyard?

3 opinions