Pith Number

pith:XORW6FVR

pith:2006:XORW6FVRWB6GURPX46GILZZES6

not attested not anchored not stored refs pending

Euler characteristics of algebraic varieties

Julius L. Shaneson, Laurentiu Maxim, Sylvain E. Cappell

arxiv:math/0606654 v3 · 2006-06-26 · math.AT · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XORW6FVRWB6GURPX46GILZZES6}

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	2026-05-18T03:58:48.998068Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bba36f16b1b07c6a45f7e78c85e72497960a9ee6ccadd19e52b7fa14728f6b80

Aliases

arxiv: math/0606654 · arxiv_version: math/0606654v3 · doi: 10.48550/arxiv.math/0606654 · pith_short_12: XORW6FVRWB6G · pith_short_16: XORW6FVRWB6GURPX · pith_short_8: XORW6FVR

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/XORW6FVRWB6GURPX46GILZZES6 \
  | 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: bba36f16b1b07c6a45f7e78c85e72497960a9ee6ccadd19e52b7fa14728f6b80

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f7c76da38bde57b55e1c15b66ee3e764331857d2fcc0a19d3137e9f2a38c0938",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "",
    "primary_cat": "math.AT",
    "submitted_at": "2006-06-26T17:39:05Z",
    "title_canon_sha256": "1173c723dbe6799996a0c8ae590d6c32bee1a478d6e517bd584e6e02ca6de4dd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0606654",
    "kind": "arxiv",
    "version": 3
  }
}