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- Hiroki Kodama, Peter W Michor
- 2005

The space B 0 i = Imm 0 (S 1 , R 2)/ Diff(S 1) of all immersions of rotation degree 0 in the plane modulo reparametrizations has homotopy groups π 1 (B 0 i) = Z, π 2 (B 0 i) = Z, and π k (B 0 i) = 0 for k ≥ 3.

Seasonal characteristics of surface water fulvic acids (FAs) isolated from Japanese clear-water lakes were investigated. Qualitative changes in Lake Biwa and Lake Tankai FAs were determined and compared. Although the relative molecular weights determined by high-performance size-exclusion chromatography did not change remarkably, the elemental compositions,… (More)

- Hiroki Kodama, Peter W Michor
- 2005

The space B 0 i = Imm 0 (S 1 , R 2)/ Diff(S 1) of all immersions of rotation degree 0 in the plane modulo reparametrizations has homotopy groups π 1 (B 0 i) = Z, π 2 (B 0 i) = Z, and π k (B 0 i) = 0 for k ≥ 3.

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