Pith Number

pith:QRH5GPKR

pith:2022:QRH5GPKRI4Y577SS3SDJAGTDWK

not attested not anchored not stored refs pending

The contact mapping class group and rational unknots in lens spaces

Hyunki Min

arxiv:2207.03590 v2 · 2022-07-07 · 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{QRH5GPKRI4Y577SS3SDJAGTDWK}

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	2026-07-05T09:39:17.987365Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

844fd33d514731dffe52dc86901a63b2b77132721ac9da37529142a18e350cc0

Aliases

arxiv: 2207.03590 · arxiv_version: 2207.03590v2 · doi: 10.48550/arxiv.2207.03590 · pith_short_12: QRH5GPKRI4Y5 · pith_short_16: QRH5GPKRI4Y577SS · pith_short_8: QRH5GPKR

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/QRH5GPKRI4Y577SS3SDJAGTDWK \
  | 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: 844fd33d514731dffe52dc86901a63b2b77132721ac9da37529142a18e350cc0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "380772e2c9d501015a3ecaa3c02889fbe50f1f45ccc21838aee1db750daf3c66",
    "cross_cats_sorted": [
      "math.SG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2022-07-07T21:35:25Z",
    "title_canon_sha256": "9d22be8b2a25ee0f2325f0c174bc91fee53bdc401e76c466f6792c30b468cf2b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2207.03590",
    "kind": "arxiv",
    "version": 2
  }
}