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In its simplest form, it is a ring, a three-dimensional object formed by taking a cylinder and joining the two ends together.

[[Lacan]]'s first reference to the [[torus]] dates from 1953,<ref>E, 105</ref> but it is not until his work on [[topology]] in the 1970s that it begins to figure prominently in his work.

The [[topology]] of the [[torus]] illustrates certain features of the [[structure]] of the [[subject]]:

One important feature of the [[torus]] is that its centre of gravity falls outside its volume, just as the centre of the [[subject]] is outside himself; he is [[decentred]], excentric.

Another property of the [[torus]] is that "its peripheral exteriority and its central exteriority constitute only one single region."<ref>E, 105</ref>

==See Also==

* [[borromean knot]]