Om Or Aum is a common sign of hinduism. It is written like this - ॐ.It is known as pranaava or omkāra in sanskrit.A sacred syllable for hinduism, budhism and jainism.Om is more an intonation more than a word
Om or Aum is chanted before chanting any other mantras, it will purify the surroundings. We can seen the Mandukya Upanishad is entirely devoted for the explanation of AUM.OM may also be spelled AUM, means the path of Self knowledge, by removing the layers of Mind ,from the gross to the subtle.
in yoga, it is heard and i experienced to say AUM while taking inahalation and if we extend the length of that aum it will clear our lungs. For a singer practising aum 1000 times daily will clear his/her breathing problems and help to sing properly
Its vishu
yellow, a symbol of richness