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Daniel Moskovich
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Each crossing in a link diagram of a link $L$ has an A-resolution and a B-resolution.

Resolutions of a crossing

Resolving all crossings gives a collection of circles in the plane, connected by dotted lines. A state of a link diagram is a choice for each crossing of either an A-resolution or a B-resolution. The resulting state graph is the graph whose vertices correspond to the circles, and whose edges correspond to the dotted linelines. A link diagram is said to be semi-adequate if either the state-graph resulting from A-resolving all crossings, or the state-graph resulting from B-resolving all crossings (or both) have no single-edge loops.

In Section 1.3 of Guts of surfaces and the colored Jones polynomial, the authors claimstate that, "The condition that a link be semi-adequate seems to be rather mild". As evidence, they point out several low-crossing-number computations, including a computation of Stoimenow that shows that at least 249,649 of the 253,293 prime knots with 15 crossings are semi-adequate.

The question which lept to my mind (and I have no idea whether this is trivial, well-known, hard, or open) is whether this is an instance of the Strong Law of Small Numbers (which perhaps in this context should be called the `strong law of small links'):

Question: Is thea generic link diagram semi-adequate?

When I say generic, I mean in a Kolmogorov complexity sense. Perhaps we choose a random 4-valent (planar) graph, and rollflip a dicecoin to decide whether each crossing should be over or under.

Each crossing in a link diagram of a link $L$ has an A-resolution and a B-resolution.

Resolutions of a crossing

Resolving all crossings gives a collection of circles in the plane, connected by dotted lines. A state of a link diagram is a choice for each crossing of either an A-resolution or a B-resolution. The resulting state graph is the graph whose vertices correspond to the circles, and whose edges correspond to the dotted line. A link diagram is said to be semi-adequate if either the state-graph resulting from A-resolving all crossings, or the state-graph resulting from B-resolving all crossings (or both) have no single-edge loops.

In Section 1.3 of Guts of surfaces and the colored Jones polynomial, the authors claim that, "The condition that a link be semi-adequate seems to be rather mild". As evidence, they point out several low-crossing-number computations, including a computation of Stoimenow that shows that at least 249,649 of the 253,293 prime knots with 15 crossings are semi-adequate.

The question which lept to my mind (and I have no idea whether this is trivial, well-known, hard, or open) is whether this is an instance of the Strong Law of Small Numbers (which perhaps in this context should be called the `strong law of small links'):

Question: Is the generic link diagram semi-adequate?

When I say generic, I mean in a Kolmogorov complexity sense. Perhaps we choose a random 4-valent graph, and roll a dice to decide whether each crossing should be over or under.

Each crossing in a link diagram of a link $L$ has an A-resolution and a B-resolution.

Resolutions of a crossing

Resolving all crossings gives a collection of circles in the plane, connected by dotted lines. A state of a link diagram is a choice for each crossing of either an A-resolution or a B-resolution. The resulting state graph is the graph whose vertices correspond to the circles, and whose edges correspond to dotted lines. A link diagram is said to be semi-adequate if either the state-graph resulting from A-resolving all crossings, or the state-graph resulting from B-resolving all crossings (or both) have no single-edge loops.

In Section 1.3 of Guts of surfaces and the colored Jones polynomial, the authors state that, "The condition that a link be semi-adequate seems to be rather mild". As evidence, they point out several low-crossing-number computations, including a computation of Stoimenow that shows that at least 249,649 of the 253,293 prime knots with 15 crossings are semi-adequate.

The question which lept to my mind (and I have no idea whether this is trivial, well-known, hard, or open) is whether this is an instance of the Strong Law of Small Numbers (which perhaps in this context should be called the `strong law of small links'):

Question: Is a generic link diagram semi-adequate?

When I say generic, I mean in a Kolmogorov complexity sense. Perhaps we choose a random 4-valent (planar) graph, and flip a coin to decide whether each crossing should be over or under.

Source Link
Daniel Moskovich
  • 22.1k
  • 15
  • 139
  • 216

Is a generic link diagram semi-adequate?

Each crossing in a link diagram of a link $L$ has an A-resolution and a B-resolution.

Resolutions of a crossing

Resolving all crossings gives a collection of circles in the plane, connected by dotted lines. A state of a link diagram is a choice for each crossing of either an A-resolution or a B-resolution. The resulting state graph is the graph whose vertices correspond to the circles, and whose edges correspond to the dotted line. A link diagram is said to be semi-adequate if either the state-graph resulting from A-resolving all crossings, or the state-graph resulting from B-resolving all crossings (or both) have no single-edge loops.

In Section 1.3 of Guts of surfaces and the colored Jones polynomial, the authors claim that, "The condition that a link be semi-adequate seems to be rather mild". As evidence, they point out several low-crossing-number computations, including a computation of Stoimenow that shows that at least 249,649 of the 253,293 prime knots with 15 crossings are semi-adequate.

The question which lept to my mind (and I have no idea whether this is trivial, well-known, hard, or open) is whether this is an instance of the Strong Law of Small Numbers (which perhaps in this context should be called the `strong law of small links'):

Question: Is the generic link diagram semi-adequate?

When I say generic, I mean in a Kolmogorov complexity sense. Perhaps we choose a random 4-valent graph, and roll a dice to decide whether each crossing should be over or under.