Pith Number

pith:WM5FO6I5

pith:2014:WM5FO6I5BHRSWHZZ67CNNEMD3K

not attested not anchored not stored refs pending

On Euler-Poincare characteristics

Rahbar Virk

arxiv:1406.4855 v4 · 2014-06-18 · math.AG · 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{WM5FO6I5BHRSWHZZ67CNNEMD3K}

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	2026-05-18T02:40:53.849993Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b33a57791d09e32b1f39f7c4d69183da8e345566385c3e1c6e66ff2691c5e126

Aliases

arxiv: 1406.4855 · arxiv_version: 1406.4855v4 · doi: 10.48550/arxiv.1406.4855 · pith_short_12: WM5FO6I5BHRS · pith_short_16: WM5FO6I5BHRSWHZZ · pith_short_8: WM5FO6I5

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/WM5FO6I5BHRSWHZZ67CNNEMD3K \
  | 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: b33a57791d09e32b1f39f7c4d69183da8e345566385c3e1c6e66ff2691c5e126

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a0094295a8ea30cb83eece89e7206ab443593c7b822b954fe5706a17d6b22859",
    "cross_cats_sorted": [
      "math.KT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2014-06-18T19:48:23Z",
    "title_canon_sha256": "f44b67e5e7770987c9b7c27061f17386071f5d8dbce67608bf91def9c5e3c519"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.4855",
    "kind": "arxiv",
    "version": 4
  }
}