It is widely acknowledged that Ed Parker integrated concepts from physics, geometry, and other scientific disciplines to elucidate the mechanics of martial arts movements. This scientific foundation is the basis for the equation aspect of Kenpo Karate.

As outlined in the Glossary of Terminology from the book “Infinite Insights Into Kenpo Karate Volume 4,” Ed Parker defines the Equation Formula as follows:

“This is a special formula that one can follow in determining and developing specific fighting patterns that are practical and logical. The formula allow you a more conclusive basis for negotiating your alternate actions.”

In order to gain a better understanding of what this definition means, it is helpful to know why it was created and how it is used with Ed Parker’s Three Phase Concept. In combat scenarios, techniques that prove effective against one opponent may not yield the same results against another due to variations such as size, reach, height, and weight. When such situations arise (or are anticipated), the Three Phase Concept can be used to devise a  solution (a novel technique). The Three Phase Concept consist of three steps, IDEAL, WHAT IF, and FORMULATION. The Ideal Phase entails structuring specific and fixed moves of a selected sequence of movements which take into consideration the anticipated reaction that can stem from them.  The What If Phase takes in additional variables. Expected as well as unexpected actions from your opponent are projected and evaluated. The Formulation Phase involves that actual application of your newly found alternative to the original Ideal or fixed technique. The Equation Formula in conjunction with Three Phase Concept is used to assist the martial artist in conducting an in-depth analysis of the combat scenario.

In Ed Parker’s book “Infinite Insights Into Kenpo Karate Volume 5,” he states “The basic criteria is, to any given base whether it is a single move, or a series of movements, the following can be done.”

The Equation Formula

1. You can Prefix it -- add a move or moves before it.

2. You can Suffix it – add a move or moves after it.

3. You can Insert -- add a simultaneous move with the already established sequence whereby this move can be used as; A check:

• Pinning Check – where you use a pressure against your opponent’s weapons to nullify anticipated delivery of these weapons.

• Positional Check – where you place the hand or leg in a defense position or angle to minimize entry to your vital areas.

4. You can Re-Arrange it -- change the sequence of the moves,

5. You can Alter it by changing the base move or moves as you:

• Alter the weapon.

• Alter the target.

• Alter both the weapon and the target.

6. You can Adjust your move(s) as a by-product of altering by:

• Adjusting the angle of execution and range.

• Adjusting the angle of execution (which effects width and height).

• Adjusting both angle of execution and range.

7. You can Regulate the speed of the action.

• Regulating the force of action.

• Regulating the force of the action.

• Regulating the force and speed of the action.

• Regulating the intent and speed of the action (fake the move or use it as an offense).

8. You can Delete -- exclude a move or moves from the sequence.

NOTE: Altering, adjusting, and regulating could be applied to single, or combination moves or a prefix, suffix, or insert.

~ The data presented herein was compiled by AIK Black Belt Clifford Johnson in February 2025.