• mental maths include how we perform and can perform mental calculations.

• Mental logic

• Mental machines

• Default row - any varg in devanagri script , cluster क , ख , ग, घ , ण
• Default column - क , च , ट, त, प

• Default numbers
  • every ending zero digit number is a new n .
  • For convenience of writing the sequence many times it is replaced with an instance value
    • concerning pronunciation of numbers
    • क (१) ,
    • ख (२) ,
    • ग (३) ,
    • घ (४) ,
    • ण(५) ,
    • च (६) ,
    • छ (७) ,
    • ज (८) ,
    • झ (९) ,
    • कञ (१०)

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• Clock of vowels
  • K (1) , ka (2), ki (3), kii(4) , ku(5), kuu(6) , ke(7) , kai(8) , ko(9) , kau (10), kam(11) , kah(12)
• grid of consonants
  • right quadrant
  • left quadrant
  • Origin
    • being vowels
    • imaginary axis being vowels
    • miniature cube at its origin
      • having six sides
        • on paper vertical or front (ई)
        • on paper horizontal or side (आ)
        • Out of paper or roof (ऊ)
        • negative or small back
        • negative or small base
        • Negative or left side

Position of an object at a point is defined by ( ई (y), अ (x))