Hankel determinants of the Cantor sequence
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math.CO
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cantordeterminantshankelsequencenumberautomaticb-arydouble
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In the paper, we give the recurrent equations of the Hankel determinants of the Cantor sequence, and show that the Hankel determinants as a double sequence is 3-automatic. With the help of the Hankel determinants, we prove that the irrationality exponent of the Cantor number, i.e. the transcendental number with Cantor sequence as its b-ary expansion, equals 2.
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