Pith Number

pith:FS4APOCU

pith:2015:FS4APOCUUVT7NMSENRTMR5GXGJ

not attested not anchored not stored refs pending

Chain-Level String Topology Operations

Gabriel C. Drummond-Cole, Kate Poirier, Nathaniel Rounds

arxiv:1506.02596 v1 · 2015-06-08 · math.GT · 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{FS4APOCUUVT7NMSENRTMR5GXGJ}

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	2026-05-18T01:55:50.593382Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2cb807b854a567f6b2446c66c8f4d7326297e5ebbcfdffafd2c16f27e64aa173

Aliases

arxiv: 1506.02596 · arxiv_version: 1506.02596v1 · doi: 10.48550/arxiv.1506.02596 · pith_short_12: FS4APOCUUVT7 · pith_short_16: FS4APOCUUVT7NMSE · pith_short_8: FS4APOCU

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/FS4APOCUUVT7NMSENRTMR5GXGJ \
  | 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: 2cb807b854a567f6b2446c66c8f4d7326297e5ebbcfdffafd2c16f27e64aa173

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "20c1d51e785c1393b68281fffc2d8cf80ba37a5cac5634a679a94d0fde347f83",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2015-06-08T17:49:23Z",
    "title_canon_sha256": "aa70abd6686c6b0a8dff512bbe395f3445e2a210987768fdaae190bc342f64cb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.02596",
    "kind": "arxiv",
    "version": 1
  }
}