Pith Number

pith:CW6CO6E3

pith:1993:CW6CO6E3MZER2ZF3KXJUOWAMCL

not attested not anchored not stored refs pending

Injectivity on one line

Janusz Gwo\'zdziewicz

arxiv:alg-geom/9305008 v1 · 1993-05-19 · 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{CW6CO6E3MZER2ZF3KXJUOWAMCL}

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	2026-05-18T01:09:21.811197Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

15bc27789b66491d64bb55d347580c12f5f66fc8203325a6564b1a2b2782e0dc

Aliases

arxiv: alg-geom/9305008 · arxiv_version: alg-geom/9305008v1 · doi: 10.48550/arxiv.alg-geom/9305008 · pith_short_12: CW6CO6E3MZER · pith_short_16: CW6CO6E3MZER2ZF3 · pith_short_8: CW6CO6E3

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/CW6CO6E3MZER2ZF3KXJUOWAMCL \
  | 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: 15bc27789b66491d64bb55d347580c12f5f66fc8203325a6564b1a2b2782e0dc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9569f7144f45aeba22570cf9aeb55a194fd6c02d241ce44a645961bd28501dfb",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "",
    "primary_cat": "alg-geom",
    "submitted_at": "1993-05-19T07:43:35Z",
    "title_canon_sha256": "7425b783bbbfdf7820cf46a1e3cc3b002177183ccb7ee7bfeaa3241add56e0b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "alg-geom/9305008",
    "kind": "arxiv",
    "version": 1
  }
}