Pith Number

pith:YNDFMBNK

pith:2018:YNDFMBNKHSK55PXOIM4XXAINUD

not attested not anchored not stored refs pending

Dehn surgery on the minimally twisted seven-chain link

Bruno Martelli

arxiv:1808.08430 v2 · 2018-08-25 · 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{YNDFMBNKHSK55PXOIM4XXAINUD}

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	2026-05-17T23:52:52.368667Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c3465605aa3c95debeee43397b810da0cc3bfd68513e4c7311089376fee2b0c2

Aliases

arxiv: 1808.08430 · arxiv_version: 1808.08430v2 · doi: 10.48550/arxiv.1808.08430 · pith_short_12: YNDFMBNKHSK5 · pith_short_16: YNDFMBNKHSK55PXO · pith_short_8: YNDFMBNK

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/YNDFMBNKHSK55PXOIM4XXAINUD \
  | 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: c3465605aa3c95debeee43397b810da0cc3bfd68513e4c7311089376fee2b0c2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9bca76ad2216a2c2abe1bcff0ab735c1a3fe5d341d70e07c5ebacccc0d26da31",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2018-08-25T14:17:19Z",
    "title_canon_sha256": "b45b7e4b3417e0960c51e6ced177d316203846bd4a08eb790be041eefd7a90dc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.08430",
    "kind": "arxiv",
    "version": 2
  }
}