Pith Number

pith:TZ7VYTVW

pith:2005:TZ7VYTVWYYJMBFWVM56ZFJ4OLK

not attested not anchored not stored refs pending

On the homotopy Lie algebra of an arrangement

Alexander I. Suciu, Graham Denham

arxiv:math/0502417 v2 · 2005-02-19 · math.AT · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TZ7VYTVWYYJMBFWVM56ZFJ4OLK}

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	2026-05-18T04:38:49.091344Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9e7f5c4eb6c612c096d5677d92a78e5ab2917dfc46803c7c096b0dd07726faaa

Aliases

arxiv: math/0502417 · arxiv_version: math/0502417v2 · doi: 10.48550/arxiv.math/0502417 · pith_short_12: TZ7VYTVWYYJM · pith_short_16: TZ7VYTVWYYJMBFWV · pith_short_8: TZ7VYTVW

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/TZ7VYTVWYYJMBFWVM56ZFJ4OLK \
  | 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: 9e7f5c4eb6c612c096d5677d92a78e5ab2917dfc46803c7c096b0dd07726faaa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6322bfb912ca7702f6cfb0af7d365eb81c30d460539bb0556883302bec944cdf",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "",
    "primary_cat": "math.AT",
    "submitted_at": "2005-02-19T21:18:51Z",
    "title_canon_sha256": "4fa23cef2fa11314cfdaced277359c26350805da94defb3ca5cddf9ff0bee011"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0502417",
    "kind": "arxiv",
    "version": 2
  }
}