According to David Lewis's influential account of convention, for instance, a convention is a regularity in the behavior of a community which is arbitrary but perpetuates itself because it serves "some sort of common purpose.
There was a regularity to the joy of discovering these new places, each so similar, none identical.
There's a regularity to the distribution of ink, a severe flatness to the finished plane the lines are evidently drawn, but such is the precision and purpose of the mark, with no clear beginning or end, point of entry or departure, that it appears as a trick of instant becoming.
What is of interest is not the mean differences in positive response rates between non-offenders and ex-offenders but rather to assess whether there is a regularity between the number of employers who only responded to the non-offender and the number of employers who only responded to the ex-offender.
These patterns that we accept as guides we come to think of as laws: a law is a regularity that we accept for purposes of prediction and contrary-to-fact inference.
A social convention is a regularity widely observed by some group of agents.
Since as always in the empirical sciences, neither empirical evidence nor economic models imply unambiguously that an empirical observation is a regularity or even a law (because of, e.g., different data sources, measurement problems, and dissent between different schools of economic thought), it is debatable which of the empirical observations can be regarded as laws.
ApEn is a regularity statistic that quantifies the unpredictability of fluctuations in a time series.
The definition in 1 is at the least not forced upon us; and the inference from 1 and 2 to 3 overlooks the possibility that a regularity to which no exception has previously been experienced is also a regularity of which no instance has previously been experienced a possibility that is countenanced on some major conceptions of laws or that the law in question has not been instanced very often.
The only requirement is Ck+1(A) regularity of H. Regarding integer k, our result is optimal.
Moreover, additional pseudo-observations are introduced, expressing a regularity of the ZTD behavior: the inclination of the linear function must be 0 with an a priori given standard deviation.
