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20062009
most citedNew Hubble Space Telescope Discoveries of Type Ia Supernovae at z > 1: Narrowing Constraints on the Early Behavior of Dark Energy

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math.GR2009★ 17 cited

Exotic relation modules and homotopy types for certain 1-relator groups

Jens Harlander, Jacqueline A Jensen

Using stably free non-free relation modules we construct an infinite collection of 2-dimensional homotopy types, each of Euler-characteristic one and with trefoil fundamental group…