scholarly journals Supporting Girls Towards The Development of Positive Mathematical Identity

2019 ◽  
Author(s):  
◽  
Mary Jennifer Reynolds
1935 ◽  
Vol 2 (2) ◽  
pp. A46-A48
Author(s):  
J. P. Den Hartog ◽  
J. G. McGivern

Abstract The authors herein describe a means for carrying out experimentally Kelvin’s hydrodynamic analogy. A real liquid is used instead of the “ideal fluid” required by the analogy, the eddying flow caused thereby which violates the mathematical identity between the two cases being eliminated by taking photographs of the real liquid before eddying flow begins. The apparatus makes it possible to obtain photographs representing stress lines in shafts and also pictures of warped cross-sections.


2021 ◽  
pp. 030981682110615
Author(s):  
Kiyoshi Nagatani

In the wake of Böhm-Bawerk’s criticism that Marx’s law of value runs contrary to empirical facts, Marxian economics has developed mainly in two different directions: one based on the simple commodity production and the other on the mathematical identity of value with prices of production (the transformation problem). The author agrees with neither, arguing that Marx intended to base the law of value on the production process of capital, as in Capital Volume 1, independently of Capital Volume 3. However, the notion of this process and the law of value have not been sufficiently explained in Volume 1. Marx presents the value of a commodity as socially necessary labour objectified in Chapter 1 on the commodity, and later applies this rule to capitalist commodity products in Chapter 7. Pointing out the defects of this method, this article relocates the presentation of the dual nature of labour to the Labour Process (Chapter 7, Section 1), and the proof of the substance of value or the law of value to the Valorization Process (Chapter 7, Section 2). The Labour Process plays a key role in Volume 1, but it contains a fatal flaw. Consequently, Section 2 ends up with insufficient explanation. By reconstructing the Labour Process and the Process of Creating Value and Surplus value, the author confirms the meaning and reality of the law of value in Chapter 7, Section 2.


1972 ◽  
Vol 4 (1) ◽  
pp. 45-51
Author(s):  
Stan Daberkow

Economic development is an elusive, multidimensional concept. Identification of the interdependencies and interactions underlying the development process seem to call for appropriate multivariate analysis. Principal component and factor analyses were used in a study of socioeconomic interdependencies associated with economic development in multicounty areas in the 48 contiguous States. This paper summarizes some results from that study and explains the use of a mathematical identity relating factor analysis to principal component analysis. This identity explains the level of economic development in terms of alternative levels of factors.


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