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Appeared in episode 7. Dr. Rozenkranz is an old mathematician who has been studying the "squaring the circle" problem. He is also Saeno's teacher. <br /> <br /> (Source: Japanese Wikipedia)<br /><br />
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Appeared in episode 7. Dr. Rozenkranz is an old mathematician who has been studying the "squaring the circle" problem. He is also Saeno's teacher. <br /> <br /> (Source: Japanese Wikipedia)<br /><br />
