Ross indexed the following pages under the keyword: "Variable".

Organisation important variables Variable central Group (mathematical) of optical illusion Operator of optical illusion 0823 0824

Variable central 0923 0924

Break surface layers of, protect variable, also dependant Variable central, protection of Summary: A layer of break surfaces keeps within bounds not only the variables concerned, but any other variable which is a direct function of them. 1101 1102

Variable deputising 1103 1104

Higher geometry of fields and matrix theory [22]: If one variable is made more self-stable, the whole may become unstable, 2423, 2454, 2463, 2458, 2460. Absolute system with infinity of variables Canonical equations with infinity of variables Variable system with infinite 2463 2464

Black box, problem of the replacing variables Variable unobservable Higher geometry of fields and matrix theory [16]: The latent roots are invariant when variables are replaced by derivatives. 3717, 3719. Summary: Transformation of a linear absolute system. 3716 3717

Black box, problem of the Black box by differences Difference replacing variable Memory and unobservables Unobservables replacement by other observations Variable replaced by difference 4296 4297

Transformation Monograph Variable defined Transformation Monograph Variety in image 4330 4331

Part-function in set theory Step function in set-theory Summary: Control, and part-function, in terms of set theory. 4604 Incentive in society Variable can be non-metric Society [57]: Incentives in social organisation 4603. Summary: Incentives in the ultrastable system. 4602 4603

Algebra machine and internal composition Variable defined 4746 4747

Continuity in measurement Measurement nature of Metric systems with Variable metric form Summary: Scales of measurement. 4966 4967

Variable nature of Summary: What is a "variable"? Computing machines as noise-destroyer Digital computer as noise-shedder Equilibrium as noise-destroyer Mathematics what is a proof? Proof nature of Summary: Mathematical proof "in detail" means going through a sequence of states of equilibrium. 5248 5249

Joining and generality State representation by Transformation most general form Variable do not add generality 5442 5443

Information loss, in conditioned reflex Reflex, conditioned information loss Variable nature of Summary: Pavlov, p.197 Summary: Events that show mutual exclusion in their behaviours may be called a "variable". 6726 6727