Pith Number

pith:W5KII4VR

pith:2013:W5KII4VROPSK7X3FEGVB4BILYH

not attested not anchored not stored refs pending

Ambiguity of certain Chow-Kuenneth projectors

Morihiko Saito

arxiv:1310.4386 v1 · 2013-10-16 · 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{W5KII4VROPSK7X3FEGVB4BILYH}

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	2026-05-18T03:10:23.005375Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7548472b173e4afdf6521aa1e050bc1f59bc820090ff1f039c524cbc6d524b1

Aliases

arxiv: 1310.4386 · arxiv_version: 1310.4386v1 · doi: 10.48550/arxiv.1310.4386 · pith_short_12: W5KII4VROPSK · pith_short_16: W5KII4VROPSK7X3F · pith_short_8: W5KII4VR

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/W5KII4VROPSK7X3FEGVB4BILYH \
  | 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: b7548472b173e4afdf6521aa1e050bc1f59bc820090ff1f039c524cbc6d524b1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ba95af2dca752c07273a0c9673ce74fdd6ca8b3c2dd2090dce8fbe09983ce6c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2013-10-16T14:07:12Z",
    "title_canon_sha256": "7c90ebb8ad1f05acbe011daadd166252bba3fbac0ad798c9ee4cb2981d956626"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.4386",
    "kind": "arxiv",
    "version": 1
  }
}