Map and letter

Permutation Complexity Related to the Letter Doubling Map

Given a countable set X (usually taken to be N or Z), an infinite permutation π of X is a linear ordering ≺π of X , introduced in [6]. This paper investigates the combinatorial complexity of infinite permutations on N associated with the image of uniformly recurrent aperiodic binary words under the letter doubling map. An upper bound for the complexity is found for general words, and a formula ...

LETTER TO THE EDITOR Probabilistic map of language regions: challenge and implication

Sir, We have read the article entitled ‘Probabilistic map of critical functional regions of the human cerebral cortex: Broca’s area revisited’ by Tate et al. (2014) with great interest. In that article, the authors presented a bilateral probabilistic map for the essential functions by integrating the data from the ‘gold standard’ for mapping brain functions (direct cortical electrostimulation) ...

Running Head: LETTER WRITING AND LETTER PERCEPTION

letter representation capable of unifying the concept of the letter ‘a’ along its many 195 dimensions. One such study, sought to localize brain areas that correspond to an abstract 196 representation of letters (Rothlein and Rapp 2014). Here, the term abstract refers to neural 197 representation in an amodal and symbolic sense, meaning that the abstract letter representation 198 exists independ...

Letter: Covid-19, and vitamin D

Vitamin D is an immune modulator hormone with an anti-inflammatory effect. In this study the potential association between vitamin D and risk of Covid-19 disease were examined. Data of worldwide mortality rate of Covid-19 pandemic according to geographical distribution in 108 countries were analyzed. The results shows Covid-19 outbreaks and particularly mortality exhibit a decreasing North-Sout...

LETTER TO THE EDITOR Physiological Interpretation of the Self-Organizing Map Algorithm