**INTRODUCTION**

Havan
Kund of prescribed form and size are meant to hold sacred fire to
which oblations were offered. Their sections represented various
geometrical figures such as circle, semi-circle, polygon (triangle,
square, etc.) and forms resembling lotus flower and leaf. In order
to achieve certain desired objectives Yagyas were performed. There
are various forms of Havan Kunds Such as Ardhchandrakar, Kurmaciti
(tortoise) for victorious carrier in Brahmalok, etc.

There
are well established sutras and traditions of drawing geometrical
figures involving various forms and shapes based on mathematical
practice.

The
objectives of Yajya / Havan are for Success, business, wealth, desire
of worldly things, son, freedom from diseases, salvation, while
construction of temple or any construction, reducing planetry effect,
etc.

Agni
Puran Chapter 24 mentions 3 types of Havan Kunds 1. Square, 2. Circle
and 3. Semi-circle. Many sort of shapes were later on added. About
200 Kund manuals are listed in famous New Catalogues Catalogorum
(Vol. 4 Chennai, 1968).

The
dimensions of Kunds must be constructed accurately otherwise it
may give adverse effect i.e. if the area is more than prescribed
amount it gives diseases and if the area is less than mentioned
it brings poverty.

Certain
aspects in calculations of Havan Kunds need discussion and some
require advance mathematics. The reason behind this is that people
have translated the sutras according to their understanding and
then done calculations depending on the sutra. This is why the Yaav
and Yooka calculations differ from one book to another. Here, we
cannot say that one book is right and another is wrong as it all
depends on the method of calculations used.

The
subject of Havan Kund can be found in Sulba Sutra which is oldest
mathematical manuals of Bharat.