Pith Number

pith:U2IOAAS6

pith:2013:U2IOAAS67MXZ74HIEEDUGUE7XL

not attested not anchored not stored refs pending

Counting real rational curves on K3 surfaces

Rares Rasdeaconu, Viatcheslav Kharlamov

arxiv:1311.7621 v1 · 2013-11-29 · 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{U2IOAAS67MXZ74HIEEDUGUE7XL}

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	2026-05-18T03:05:55.738845Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a690e0025efb2f9ff0e8210743509fbaf87fb1fd213c352ba51aee62806a4adf

Aliases

arxiv: 1311.7621 · arxiv_version: 1311.7621v1 · doi: 10.48550/arxiv.1311.7621 · pith_short_12: U2IOAAS67MXZ · pith_short_16: U2IOAAS67MXZ74HI · pith_short_8: U2IOAAS6

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/U2IOAAS67MXZ74HIEEDUGUE7XL \
  | 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: a690e0025efb2f9ff0e8210743509fbaf87fb1fd213c352ba51aee62806a4adf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "74af7bdb6c7206a1c44687d8e7999d802458df7955fb3b8ba345318c54e2fca8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2013-11-29T16:28:02Z",
    "title_canon_sha256": "a24741603e520476042e7cc4dc30b477a87549c3a9e8f2c489be239b236ed0e6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.7621",
    "kind": "arxiv",
    "version": 1
  }
}