Pith Number

pith:STJSRC4Z

pith:2014:STJSRC4ZDQDGW57UMKLM3MCQ4O

not attested not anchored not stored refs pending

On Basmajian's identities, and other stories

Igor Rivin

arxiv:1404.1583 v2 · 2014-04-06 · 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{STJSRC4ZDQDGW57UMKLM3MCQ4O}

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	2026-05-18T02:19:08.551185Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

94d3288b991c066b77f46296cdb050e38a0f8c40ecf28273e73d97f7d943d4be

Aliases

arxiv: 1404.1583 · arxiv_version: 1404.1583v2 · doi: 10.48550/arxiv.1404.1583 · pith_short_12: STJSRC4ZDQDG · pith_short_16: STJSRC4ZDQDGW57U · pith_short_8: STJSRC4Z

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/STJSRC4ZDQDGW57UMKLM3MCQ4O \
  | 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: 94d3288b991c066b77f46296cdb050e38a0f8c40ecf28273e73d97f7d943d4be

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8c4771c9b72b00695eb05442f5f8758ab22c2dbd433969be0c6769da4bc8b57c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2014-04-06T14:36:38Z",
    "title_canon_sha256": "c8ea135811166d84c332f49aad75574007ca4b2b990b168e63287bfb9dec5d5d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.1583",
    "kind": "arxiv",
    "version": 2
  }
}