Pith Number

pith:XTLQFMLY

pith:2017:XTLQFMLYDVMGITXSI5LVSDSNFT

not attested not anchored not stored refs pending

K3 surfaces with Picard number 2, Salem polynomials and Pell equation

JongHae Keum, Kenji Hashimoto, Kwangwoo Lee

arxiv:1711.02822 v1 · 2017-11-08 · 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{XTLQFMLYDVMGITXSI5LVSDSNFT}

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	2026-05-18T00:31:01.647161Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bcd702b1781d58644ef24757590e4d2cf287f0963e2a71b04c2ca3439ef214e6

Aliases

arxiv: 1711.02822 · arxiv_version: 1711.02822v1 · doi: 10.48550/arxiv.1711.02822 · pith_short_12: XTLQFMLYDVMG · pith_short_16: XTLQFMLYDVMGITXS · pith_short_8: XTLQFMLY

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/XTLQFMLYDVMGITXSI5LVSDSNFT \
  | 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: bcd702b1781d58644ef24757590e4d2cf287f0963e2a71b04c2ca3439ef214e6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "93d7bb7b5e7177720696729ec9d6c73496a7c1df5999a117a92e45045d318720",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2017-11-08T04:15:38Z",
    "title_canon_sha256": "c6bf1d3307bbbb7669c86e84d0e7901ef448cf7425bc1f52ee51483cc9788812"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.02822",
    "kind": "arxiv",
    "version": 1
  }
}