Pith Number

pith:F74XNB74

pith:2015:F74XNB74WXYBZNEYUR4ONZNYOQ

not attested not anchored not stored refs pending

Long and thin covers for flow spaces

Daniel Kasprowski, Henrik Rueping

arxiv:1502.05001 v2 · 2015-02-17 · math.AT · math.KT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{F74XNB74WXYBZNEYUR4ONZNYOQ}

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	2026-05-18T00:27:47.407124Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ff97687fcb5f01cb498a478e6e5b8740390e0a0e719f4b255d31b82a6e3c1ee

Aliases

arxiv: 1502.05001 · arxiv_version: 1502.05001v2 · doi: 10.48550/arxiv.1502.05001 · pith_short_12: F74XNB74WXYB · pith_short_16: F74XNB74WXYBZNEY · pith_short_8: F74XNB74

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/F74XNB74WXYBZNEYUR4ONZNYOQ \
  | 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: 2ff97687fcb5f01cb498a478e6e5b8740390e0a0e719f4b255d31b82a6e3c1ee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0dc45abe46e9822cf669afdac681aec1b3a54a6ae80dc29a91d953d83513ad9d",
    "cross_cats_sorted": [
      "math.KT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2015-02-17T18:58:23Z",
    "title_canon_sha256": "38ced51bf7cd384d580e2cb6ca41889eba39ac758d4dee48a4269fd5621c26c4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.05001",
    "kind": "arxiv",
    "version": 2
  }
}