Pith Number

pith:O5WJEXYJ

pith:2014:O5WJEXYJGLZ33HXPG7TOESVPJL

not attested not anchored not stored refs pending

Homotopy equivalence of finite digital images

Casey S. Peters, Jason Haarmann, Meg P. Murphy, P. Christopher Staecker

arxiv:1408.2584 v2 · 2014-08-11 · math.GN · cs.CG · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{O5WJEXYJGLZ33HXPG7TOESVPJL}

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	2026-05-18T01:32:30.730153Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

776c925f0932f3bd9eef37e6e24aaf4ae6bf7cecd9c9202c5da756bd431d601a

Aliases

arxiv: 1408.2584 · arxiv_version: 1408.2584v2 · doi: 10.48550/arxiv.1408.2584 · pith_short_12: O5WJEXYJGLZ3 · pith_short_16: O5WJEXYJGLZ33HXP · pith_short_8: O5WJEXYJ

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/O5WJEXYJGLZ33HXPG7TOESVPJL \
  | 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: 776c925f0932f3bd9eef37e6e24aaf4ae6bf7cecd9c9202c5da756bd431d601a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1441852c394068a2e4bc9f65a8a75c9f615d8df0fd99384dd450524d72cc55ad",
    "cross_cats_sorted": [
      "cs.CG",
      "cs.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GN",
    "submitted_at": "2014-08-11T23:57:39Z",
    "title_canon_sha256": "b1e9e2de7d0048062df2f2e3e57047abc1d69ebd54feaa2e9512b23fdd1a8a79"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.2584",
    "kind": "arxiv",
    "version": 2
  }
}