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zbMath0697.57005MaRDI QIDQ3473826

Zong-He Chen

Publication date: 1988

Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.

zbMATH Keywords

Poincaré conjecture Heegaard diagram of a 3-manifold reducing the genus simply closed curves on the boundary of a handlebody trivial knot curves on the boundary of a handlebody

Mathematics Subject Classification ID

Fundamental group, presentations, free differential calculus (57M05)

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