Pith Number

pith:Z7AP3LCU

pith:2013:Z7AP3LCU7RU3JO6PKPOJW4OXZQ

not attested not anchored not stored refs pending

On the singular sheaves in the fine Simpson moduli spaces of 1-dimensional sheaves supported on plane quartics

Oleksandr Iena

arxiv:1305.2400 v2 · 2013-05-10 · 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{Z7AP3LCU7RU3JO6PKPOJW4OXZQ}

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	2026-05-18T01:32:11.060119Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cfc0fdac54fc69b4bbcf53dc9b71d7cc323f6f9b04f74ee6180393a08eabd069

Aliases

arxiv: 1305.2400 · arxiv_version: 1305.2400v2 · doi: 10.48550/arxiv.1305.2400 · pith_short_12: Z7AP3LCU7RU3 · pith_short_16: Z7AP3LCU7RU3JO6P · pith_short_8: Z7AP3LCU

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/Z7AP3LCU7RU3JO6PKPOJW4OXZQ \
  | 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: cfc0fdac54fc69b4bbcf53dc9b71d7cc323f6f9b04f74ee6180393a08eabd069

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc3fdf00f6ef5e2691dc8381909cd54077e6abd742096893d5d521b115cb8471",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2013-05-10T18:08:24Z",
    "title_canon_sha256": "b6ee1e5c706380164f1b852d825c33900a6da32f60f3668c55aaa70dc2400765"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.2400",
    "kind": "arxiv",
    "version": 2
  }
}