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Critical surface
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Ross indexed the following pages under the keyword: "Critical surface".


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1941
Break surface
Critical surface defined
0897 0898
Break surface
Critical surface if not related to essential variables
Summary: "Step-function" is defined. An analytic formula given for one. If a function in a substitution is a step function of the variables, the corresponding variable in the solved equations is a step-function of the time. The effect in a field of a step-function is discussed, The essential conditions for a break are a cloud of dots, each of which has a number associated with it saying "change one of the step-functions to this new value" and not a surface as suggested on 898.
1003 1004
Critical surface if not related to essential variables
Neutral point (of equilibrium - including 'cycle', 'region' etc.) examples
Summary: The behaviour of break-surfaces.
1021 1022
Critical surface if not related to essential variables
Critical surface interactions
Summary: An example is given, in all detail, of a substitution with two step-functions. It confirms the theorum of 1021. The existence of "false neutral points" is noted.
Neutral point (of equilibrium - including 'cycle', 'region' etc.) "false"
1027 1028
Summary: Later we shall have to show how we can break down the minute rigidity of our dynamic systems, where the minutest change has to be put in and may lead to something profoundly different. Suggested way of doing it.
Break surface no free edge
Critical surface has no free edge
Summary: The V-surface of a step-function cannot have a free edge.
Group (mathematical) finite continuous
1043 1044

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1942
Break surface further properties
Critical surface if not related to essential variables
Summary: A clarification of the concept of a "break-surface".
Summary: The conditioned reflex is not clear yet.
Reflex, conditioned and break-theory
1175 1176

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1950
Summary: Allbutt on a type of man.
Essential variables sometimes not related to critical states
Critical surface if not related to essential variables
Pain patient insensitive to pain
2831 2832

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1957
Summary: Additive mechanisms in the brain. 5763, 5765.1, 5766.1, 5768
Cortex as store
Critical surface variation of
Signal in ultrastable system
5760 5761

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