Pith Number

pith:GP2ZKQIN

pith:2017:GP2ZKQINY2X6VZTIFGFKY4NUSE

not attested not anchored not stored refs pending

Divisive cover

Morten Brun, Nello Blaser

arxiv:1702.05350 v4 · 2017-02-17 · 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{GP2ZKQINY2X6VZTIFGFKY4NUSE}

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	2026-05-18T00:14:57.188171Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

33f595410dc6afeae668298aac71b4913e0189ab431a3e17715551f1f6fb0913

Aliases

arxiv: 1702.05350 · arxiv_version: 1702.05350v4 · doi: 10.48550/arxiv.1702.05350 · pith_short_12: GP2ZKQINY2X6 · pith_short_16: GP2ZKQINY2X6VZTI · pith_short_8: GP2ZKQIN

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/GP2ZKQINY2X6VZTIFGFKY4NUSE \
  | 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: 33f595410dc6afeae668298aac71b4913e0189ab431a3e17715551f1f6fb0913

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2492f9e7794adf88edc9068ab974cf94e952d295df42482029814fde88d82854",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2017-02-17T14:16:04Z",
    "title_canon_sha256": "d59857ba5336215a09aebaa771e9477f7918dc0a84d90586463f15e05c2cc7e1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.05350",
    "kind": "arxiv",
    "version": 4
  }
}