the principle of samanaadikaranya of bhagavan sri yatiraja

bhagavan shri bhashyakara , in his famous work vedartha samgraha , enlightens the meaning of the famous words " tath tvam asi" using unprecendented logic called samana adikaranya meaning coordinate predication. this principle can be explained with a simple example.
the mayavadin points out that in the cognition such as a purple rope, red rope etc, the rope alone is real and color is unreal. Ramanuja says that in explaning the term a purple or red rope the relationship between color and substance is {aprtak siddhi meaning inseparable} yet different. he says reduction or nullifying the attributes of a substance doesnt yield the nature of real substance. the substance has to be understood as a whole including attributes and the relationship between them. this is called as samana adikarnya. it necessitates that the attributes are different from each other and from the substance yet inseperable. like the purple and long lope, the color and size are different from eachother and from the rope but are inseperable.
the same way he explains the passage "tath tvam asi" meaning the Brahmam is the bastion where jeevatmas reside and they are his modes , inseparable yet different and this forms a whole {brahmam} but qualified by different atributes and expressions like prakriti , jeevatmas and his vishesha attributes like satyam jnayam, anantham, anandam, salubyam, aishwaryam etc.
from logical point of view , Ramanuja's use of samanadikaryna surpasses all the levels of excellence for it give a unitary view of upanishads and solves the conflict between passages conveying bedha and those conveying abedha.