Le Guide Vert Roussillon Pays Cathare Michelin

Site emblématique du pays Cathare, le château de Quéribus veille depuis de nombreux siècles sur la vaste plaine du Roussillon, perché sur un éperon rocheux. Partez à la découverte d’un site à ...

Marie Claire: Perché à 729 mètres d’altitude, cette ancienne forteresse royale offre un panorama époustouflant sur la plaine du Roussillon

Perché à 729 mètres d’altitude, cette ancienne forteresse royale offre un panorama époustouflant sur la plaine du Roussillon

According to texdoc symbols: \mvert and \mid are identical and produce a relation. \vert is a synonym for | and both produce the same symbol, but should be used in the context of an ordinal, and should be used as an operator, not as a delimiter (p54, bottom). \divides once again produces the same symbol but should be used as a binary “divides” operator. \lvert and \rvert are left and right ...

As you can see, the top formula has \vert size as default. I want the latter formula, How do I change my command? I can't use the \left and \right command because there is no left or right in \vert. Any help is appreciated.

How can I change the size of \vert accordingly like \left and ... - TeX

In short, \bigl\vert \bigr\vert is definitely better than \big\vert \big\vert, typographically speaking, as it produces the correct spacing in all cases. A final remark, prompted by a comment from barbara beeton: For the code examples used here, it's not necessary to increase the size of the vertical bars.

math mode - Use \big\vert f (x) \big\vert or `\big\lvert f (x) \big ...