The Sanskrit symbol  found at the top of the Epsom Yoga logo just above the two people practising bhujangasana (the cobra pose) represents the universal sound pronounced and written OM, AUM, or even OMKAR. In other cultures, its equivalents are Amen (Christianity), Amin (Islam), Shalom (Hebrew), Salaam (Arabic).

 is a mantra in itself, i.e. a word that is repeated to focus the mind.  is traditionally chanted at the beginning and end of yoga sessions. It is said to express the pulse or vibration of the cosmos itself and is considered to be the most fundamental and powerful universal mantra, the source of all mantras.

“OM.
The imperishable sound, is the seed of all that exists.
The past, the present, the future – all are but the unfolding of OM.
And whatever transcends the three realms of time, that indeed is the flowering of OM.”
(A. Shearer & P. Russell’s translation of the Upanishads)