113

Answers
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Mapping class group of once-punctured torus
6
The role of the Automatic Groups in the history of Geometric Group Theory
6
Converse to Milnor’s theorem on manifolds with nonnegative Ricci curvature.
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Classification of geometric outer automorphisms of free groups
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Periodic automorphisms of free groups and surface homeomorphisms
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Hyperbolic Riemann Surface
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Is rigour just a ritual that most mathematicians wish to get rid of if they could?
3
What does it mean that homotopy is generic?
4
Compelling evidence that two basepoints are better than one
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When does one obtain different 3-manifolds by pasting two tori?
2
noncompact manifold with two ends splits?
2
What’s the name of “twisted semidirect products”?
10
A direct proof of the Harer-Zagier recursion enumerating the ways to paste a 2n-gon to get a genus g surface?
2
Chain Recurrent Set of a Isometry
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Does the poset of free factors of a free group form a lattice?
4
Conditions for a graph to be the 1- skeleton of a Surface
1
Demystifying complex numbers
12
Was the early calculus inconsistent?
1
Fundamental domain for subgroup of fuchsian Schottky group.
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discrete subgroups of Lie groups and actions on homogeneous spaces
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Is there any relation between automorphism group of a Cayley graph over a group and over its subgroup?
2
Isometric but differently shaped closed surfaces in $\mathbb{R}^3$
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Topology of ${\mathbb R}^n$
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Connected sum of topological manifolds
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when is the Teichmuller space a group?
13
Trichotomies in mathematics (2)
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continuity of length function $l: T(X) \times MF \to \mathbb R$
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projective structure and holonomy
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Generating function of a regular language
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Are there noncongruence subgroups (of finite index) of the modular group generated only by 2 or 3 elements?
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