1,686 research outputs found
Examining the method of proofs and refutations in pre-service teachers education
There is some evidence in the mathematics education literature that Lakatos’ proofs and refutation methods can be useful to examining students’ conjecture production and proof construction process. The purpose of this study was to determine how the Lakatos method goes and which steps of the method works in the teacher education program. The population sample for this study consists of 24 senior pre-service teachers in elementary mathematics education in Turkey (16 women and 8 men). Pre-service teachers were given a problem in which they examined the relation between perimeter and area of a rectangle. Data was collected with a camera, field notes, and groups’ written solutions and analyzed on the basis of framework included in Larsen and Zandieh’s (2008) study. The finding revealed that Lakatos’ method was usable in the teacher education program. But some steps of the method described in Lakatos’ (1976) historical case study were not provided in the real classroom environment
The Rational Higher Structure of M-theory
We review how core structures of string/M-theory emerge as higher structures
in super homotopy theory; namely from systematic analysis of the brane bouquet
of universal invariant higher central extensions growing out of the superpoint.
Since super homotopy theory is immensely rich, to start with we consider this
in the rational/infinitesimal approximation which ignores torsion-subgroups in
brane charges and focuses on tangent spaces of super space-time. Already at
this level, super homotopy theory discovers all super -brane species, their
intersection laws, their M/IIA-, T- and S-duality relations, their black brane
avatars at ADE-singularities, including their instanton contributions, and,
last not least, Dirac charge quantization: for the D-branes it recovers twisted
K-theory, rationally, but for the M-branes it gives cohomotopy cohomology
theory. We close with an outlook on the lift of these results beyond the
rational/infinitesimal approximation to a candidate formalization of
microscopic M-theory in super homotopy theory.Comment: 32 pages, Contribution to Proceedings of LMS/EPSRC Durham Symposium
Higher Structures in M-Theory, August 201
Spurious, Emergent Laws in Number Worlds
We study some aspects of the emergence of logos from chaos on a basal model
of the universe using methods and techniques from algorithmic information and
Ramsey theories. Thereby an intrinsic and unusual mixture of meaningful and
spurious, emerging laws surfaces. The spurious, emergent laws abound, they can
be found almost everywhere. In accord with the ancient Greek theogony one could
say that logos, the Gods and the laws of the universe, originate from "the
void," or from chaos, a picture which supports the unresolvable/irreducible
lawless hypothesis. The analysis presented in this paper suggests that the
"laws" discovered in science correspond merely to syntactical correlations, are
local and not universal.Comment: 24 pages, invited contribution to "Contemporary Natural Philosophy
and Philosophies - Part 2" - Special Issue of the journal Philosophie
Harmonious architecture and kinetic linear energy
This is a chapter in a book based upon the work from an Erasmus International Project which took place in Athens in July 2012
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