Pith Number

pith:KLOYEBA6

pith:2024:KLOYEBA6VLCNJ6NDX4FAY3SJTY

not attested not anchored not stored refs pending

E2 formality via obstruction theory

Geoffroy Horel

arxiv:2407.16236 v2 · 2024-07-23 · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KLOYEBA6VLCNJ6NDX4FAY3SJTY}

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	2026-05-26T02:03:46.455049Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

52dd82041eaac4d4f9a3bf0a0c6e499e2b2addca581d03e1e4548defc8e041b9

Aliases

arxiv: 2407.16236 · arxiv_version: 2407.16236v2 · doi: 10.48550/arxiv.2407.16236 · pith_short_12: KLOYEBA6VLCN · pith_short_16: KLOYEBA6VLCNJ6ND · pith_short_8: KLOYEBA6

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/KLOYEBA6VLCNJ6NDX4FAY3SJTY \
  | 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: 52dd82041eaac4d4f9a3bf0a0c6e499e2b2addca581d03e1e4548defc8e041b9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2f733cd03a9dbfaf05c6190d5a188577f32ac9db250baba79744b79e7613ad69",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2024-07-23T07:21:54Z",
    "title_canon_sha256": "610a86df2f9ee6ce2f2f05322313eea8bb85d8d16f7127aa94559b8754dfe047"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2407.16236",
    "kind": "arxiv",
    "version": 2
  }
}