Zero Numerology is a new evolution in the field of Numerology envisioned by Sidhharrth S Kumaar.
The new numerology system considers 0 as a divine number and axis of Numerology. All other numbers, 1-9 revolved around the Zero.
The current series of books talk about Birth Order & its impact on human life. The nature trait, behaviour pattern has been correlated with the Birth Pattern of a Child.
First Borns (Elder Children) share a similar set of nature traits.
Birth order also impacts the core numbers of a person in Numerology
Assuming, a person with birth number 1, who is firstborn and last born will show different nature traits.