Pith Number

pith:EEL6J2Q5

pith:2019:EEL6J2Q5L5WBJ5MUCPYCGGQQQM

not attested not anchored not stored refs pending

Trees are nilrigid

Ville Salo

arxiv:1905.06093 v1 · 2019-05-15 · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EEL6J2Q5L5WBJ5MUCPYCGGQQQM}

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	2026-05-17T23:46:07.520371Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2117e4ea1d5f6c14f59413f0231a10832bff35624af38d76150456d5b9d216a7

Aliases

arxiv: 1905.06093 · arxiv_version: 1905.06093v1 · doi: 10.48550/arxiv.1905.06093 · pith_short_12: EEL6J2Q5L5WB · pith_short_16: EEL6J2Q5L5WBJ5MU · pith_short_8: EEL6J2Q5

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/EEL6J2Q5L5WBJ5MUCPYCGGQQQM \
  | 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: 2117e4ea1d5f6c14f59413f0231a10832bff35624af38d76150456d5b9d216a7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8e3e7ade8b4649973aaf0350f3156c3855b6de9942fe7ff8ff7a0df59c6bff95",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2019-05-15T11:20:29Z",
    "title_canon_sha256": "0fe5c786ecd85122d5447266e9980e4abbe1f8c96f01320c0929ca91364ab899"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.06093",
    "kind": "arxiv",
    "version": 1
  }
}