Pith Number

pith:SQNNOBD5

pith:2019:SQNNOBD5OA4XHMFEWGEM63MJSH

not attested not anchored not stored refs pending

A simple algorithm to compute link polynomials defined by using skein relations

Xuezhi Zhao

arxiv:1908.04292 v1 · 2019-08-10 · math.GT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SQNNOBD5OA4XHMFEWGEM63MJSH}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-04T23:54:29.185726Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

941ad7047d703973b0a4b188cf6d8991e487875f711cde5e732281183c5b5d7f

Aliases

arxiv: 1908.04292 · arxiv_version: 1908.04292v1 · doi: 10.48550/arxiv.1908.04292 · pith_short_12: SQNNOBD5OA4X · pith_short_16: SQNNOBD5OA4XHMFE · pith_short_8: SQNNOBD5

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/SQNNOBD5OA4XHMFEWGEM63MJSH \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 941ad7047d703973b0a4b188cf6d8991e487875f711cde5e732281183c5b5d7f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f2b231391712cdb7c1ccdaa890ecc0ccd96a14e11354a7c3361139da2f756480",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2019-08-10T12:44:39Z",
    "title_canon_sha256": "78ad0c3b6905d9146e20760a01817c04e21b73984a9590396ca2fc2cf6353d3a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.04292",
    "kind": "arxiv",
    "version": 1
  }
}