Pith Number

pith:M5CDPM7H

pith:1997:M5CDPM7HWVSVSG2KJ6RAYAXNV5

not attested not anchored not stored refs pending

Alexander Invariants of Complex Hyperplane Arrangements

Alexander I. Suciu, Daniel C. Cohen

arxiv:alg-geom/9703030 v1 · 1997-03-22 · alg-geom · 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{M5CDPM7HWVSVSG2KJ6RAYAXNV5}

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	2026-05-18T04:38:49.121387Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

674437b3e7b565591b4a4fa20c02edaf7deb17b3e5608a0228bc39971a6f7507

Aliases

arxiv: alg-geom/9703030 · arxiv_version: alg-geom/9703030v1 · doi: 10.48550/arxiv.alg-geom/9703030 · pith_short_12: M5CDPM7HWVSV · pith_short_16: M5CDPM7HWVSVSG2K · pith_short_8: M5CDPM7H

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/M5CDPM7HWVSVSG2KJ6RAYAXNV5 \
  | 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: 674437b3e7b565591b4a4fa20c02edaf7deb17b3e5608a0228bc39971a6f7507

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "29f9991ffbbc82ab19f9e70dcea6cbe865a5177fe3281b6a307fa67cbbe0b773",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "",
    "primary_cat": "alg-geom",
    "submitted_at": "1997-03-22T16:22:59Z",
    "title_canon_sha256": "301e48458f3cf662cbbc38d48abf1983c9bd1fb4bbed3694d13860958423eefa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "alg-geom/9703030",
    "kind": "arxiv",
    "version": 1
  }
}