I have a question regarding Mishna 88a Nedarim. Why is all this issue of the erub and her property brought into the discussion. One opinion is what belongs to her, belongs to him, but the rest ir not clear.
The Gemara points out that Rav holds like Rebbi Meir, who says that everything a woman acquires becomes the property of her husband (unless specific conditions are stated, as the Mishnah says), because the hand of the woman is like an extension of the hand of her husband. The Gemara then questions this view, asking that if Rebbi Meir holds that whatever is in the hands of the woman belong to the husband, then how could the Mishnah in Eruvin (which is presumably following the view of Rebbi Meir, like all un-identified statements in the Mishnah) say that a woman can be Mezakeh (acquire) the husband's item to all of the other people in the courtyard? There is a rule that in order to be Mezakeh an item to someone else, the owner of the item must give the item to a third party who then is Mezakeh it to the others. The owner himself cannot directly be Mezakeh his own item to someone else. If, however, a woman is considered to be an extension of her husband, then the husband's item is still in his own hands when she tries to be Mezakeh it to the others.
That is the Gemara's question on the view of Rebbi Meir.
I highly recommend our Daf-Outline and Daf-Review sections, if you have not used them already. They are located in the Nedarim archives on the website.