Pith Number

pith:5K4QBJQ7

pith:2019:5K4QBJQ766FLTS6YNAGWTUL3BO

not attested not anchored not stored refs pending

Classification of tight contact structures on surgeries on the figure-eight knot

Hyunki Min, James Conway

arxiv:1901.06066 v2 · 2019-01-18 · math.GT · math.SG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5K4QBJQ766FLTS6YNAGWTUL3BO}

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	2026-07-05T02:04:02.766052Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eab900a61ff78ab9cbd8680d69d17b0b9603f5cf1cadfa50d0be8f17b3a3f7fe

Aliases

arxiv: 1901.06066 · arxiv_version: 1901.06066v2 · doi: 10.48550/arxiv.1901.06066 · pith_short_12: 5K4QBJQ766FL · pith_short_16: 5K4QBJQ766FLTS6Y · pith_short_8: 5K4QBJQ7

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/5K4QBJQ766FLTS6YNAGWTUL3BO \
  | 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: eab900a61ff78ab9cbd8680d69d17b0b9603f5cf1cadfa50d0be8f17b3a3f7fe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "32e0e49134e2187384384ad4a1156edd3756286f23c9845965ca4ce9dd4dea1b",
    "cross_cats_sorted": [
      "math.SG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2019-01-18T02:55:04Z",
    "title_canon_sha256": "a7e288244ddc2175de50b275a9a1c11464599798ba8d75b57b0eb7eab5862322"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.06066",
    "kind": "arxiv",
    "version": 2
  }
}