KR-homology via swm.

KR-sample.swift

import SwmCore
import SwmKnots
import SwmKR

typealias R = RationalNumber

// Load knot/link by name.
// There are presets up to 11 crossings.
let K = Link.load("3_1")!
print(K.name)

// Or you can specify the PD-code.
// let K = Link(name: "3_1", pdCode: [[1,4,2,5],[3,6,4,1],[5,2,6,3]])

let H = KRHomology<R>(K)

// print table
print(H.table())
print()

// print table with restricted degrees
// print(H.table(i:2, j:-2))
// print(H.table(j:-2, k:2))
// print()

// print specific degree
// print("H[2, -2, 2]: ", H[2, -2, -2])
// print()

// other properties
// print("graded-euler:", H.gradedEulerCharacteristic)
// print("highest-q:", H.highestQPart)
// print("lowest-q: ", H.lowestQPart)
// print("highest-a:", H.highestAPart)
// print("lowest-a: ", H.lowestAPart)