Geodesic
A Lower Bound for the Class Number of a Real Quadratic Field of ERD-Type
Canadian mathematical bulletin, Tome 37 (1994) no. 1, pp. 90-96

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DOI

In this paper, we use the Lagrange neighbour and our equivalence theorem for primitive ideals to obtain lower bounds which are sharper than those given in the literature for class numbers of real quadratic fields in general, but applied to greatest advantage when d is of ERD type.
DOI : 10.4153/CMB-1994-014-8
Mots-clés : 11R11, 11R09, 11R29, class number, primitive ideal, divisor function, Lagrange neighbour, ERD-type, quadratic fields 
Mollin, R. A.; Zhang, L.-C. A Lower Bound for the Class Number of a Real Quadratic Field of ERD-Type. Canadian mathematical bulletin, Tome 37 (1994) no. 1, pp. 90-96. doi: 10.4153/CMB-1994-014-8
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