24.06.2013 Views

For printing - MSP

For printing - MSP

For printing - MSP

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

146 DANIEL J. MADDEN<br />

b, 2b(2bn + 1) k−1 , b(2bn + 1), 2b(2bn + 1) k−2 , b(2bn + 1) 2 , . . . ,<br />

b(2bn + 1) k−1 , b(2bn + 1) 1 , 2b(2bn + 1) k−1 , 2b,<br />

b(2bn + 1) k + n,<br />

2b, b(2bn + 1) k−1 , 2b(2bn + 1), b(2bn + 1) k−2 , 2b(2bn + 1) 2 , . . . ,<br />

2b(2bn + 1) k−2 , b(2bn + 1) 1 , 2b(2bn + 1) k−1 , b, 2b(2bn + 1) k + 2n<br />

If we take n = b, we get<br />

<br />

b 2 ((2b 2 + 1) k + 1) 2 + 2(2b 2 + 1) k<br />

<br />

=<br />

=<br />

b2 (2b2 + 1) 2k + 2(b2 + 1)(2b2 + 1) k + 1<br />

<br />

b(2b 2 + 1) k + b;<br />

b, 2b(2b 2 + 1) k−1 , b(2b 2 + 1), 2b(2b 2 + 1) k−2 , b(2b 2 + 1) 2 , . . . ,<br />

b(2b 2 + 1) k−2 , 2b(2b 2 + 1) 1 , b(2b 2 + 1) k−1 , 2b,<br />

b(2b 2 + 1) k + b,<br />

2b, b(2b 2 + 1) k−1 , 2b(2b 2 + 1), b(2b 2 + 1) k−2 , 2b(2b 2 + 1) 2 , . . . ,<br />

2b(2b 2 + 1) k−2 , b(2b 2 + 1) 1 , 2b(2b 2 + 1) k−1 , b, 2b(2b 2 + 1) k + 2b<br />

We can multiply this by b to get a new expansion:<br />

<br />

=<br />

b 4 (2b 2 + 1) 2k + 2b 2 (b 2 + 1)(2b 2 + 1) k + b 2<br />

<br />

b 2 (2b 2 + 1) k + b 2 ;<br />

1, 2b 2 (2b 2 + 1) k−1 , (2b 2 + 1), 2b 2 (2b 2 + 1) k−2 , (2b 2 + 1) 2 , . . . ,<br />

(2b 2 + 1) k−2 , 2b 2 (2b 2 + 1) 1 , (2b 2 + 1) k−1 , 2b 2 ,<br />

(2b 2 + 1) k + 1,<br />

2b 2 , (2b 2 + 1) k−1 , 2b 2 (2b 2 + 1), (2b 2 + 1) k−2 , 2b 2 (2b 2 + 1) 2 , . . . ,<br />

2b 2 (2b 2 + 1) k−2 , (2b 2 + 1) 1 , 2b 2 (2b 2 + 1) k−1 , 1, 2b 2 (2b 2 + 1) k + 2b 2<br />

.<br />

References<br />

[A] T. Azuhatu, On the fundamental units and class numbers of real quadratic fields,<br />

II, Tokyo Journal of Math., 10 (1987), 259-270.<br />

[LR] C. Levesque and G. Rind, A few classes of periodic continued fractions, Utilitas<br />

Math, 30 (1986), 79-107.<br />

<br />

.<br />

<br />

.

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!