Pith Number

pith:QQVKQGM7

pith:2019:QQVKQGM73JK46CHHCWDDFTIHPV

not attested not anchored not stored refs pending

On the Borisov-Nuer conjecture and the image of the Enriques-to-K3 map

Marian Aprodu, Yeongrak Kim

arxiv:1905.09623 v1 · 2019-05-23 · 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{QQVKQGM73JK46CHHCWDDFTIHPV}

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	2026-05-17T23:45:16.472881Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

842aa8199fda55cf08e7158632cd077d443bcada5aa476cefd955ef4313519cd

Aliases

arxiv: 1905.09623 · arxiv_version: 1905.09623v1 · doi: 10.48550/arxiv.1905.09623 · pith_short_12: QQVKQGM73JK4 · pith_short_16: QQVKQGM73JK46CHH · pith_short_8: QQVKQGM7

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/QQVKQGM73JK46CHHCWDDFTIHPV \
  | 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: 842aa8199fda55cf08e7158632cd077d443bcada5aa476cefd955ef4313519cd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b761005fbdd392dcdbfa934f644686d2b225c41fdc4e39d599a5fda6bec15d4a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-05-23T12:48:05Z",
    "title_canon_sha256": "19c8a581de838b53298d9db478a473d75deacc3d971d739bbc80c9e1d54bd1bb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.09623",
    "kind": "arxiv",
    "version": 1
  }
}