Pith Number

pith:FI5YTIL2

pith:2017:FI5YTIL2PPFGMIZRJHXAP24TUD

not attested not anchored not stored refs pending

On an open problem of characterizing the birationality of 4K

Meng Chen, Yong Hu

arxiv:1711.04535 v3 · 2017-11-13 · 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{FI5YTIL2PPFGMIZRJHXAP24TUD}

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	2026-05-18T00:13:05.073821Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a3b89a17a7bca66233149ee07eb93a0edf8d9a07e28423c1045e3c62dd29f8c

Aliases

arxiv: 1711.04535 · arxiv_version: 1711.04535v3 · doi: 10.48550/arxiv.1711.04535 · pith_short_12: FI5YTIL2PPFG · pith_short_16: FI5YTIL2PPFGMIZR · pith_short_8: FI5YTIL2

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/FI5YTIL2PPFGMIZRJHXAP24TUD \
  | 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: 2a3b89a17a7bca66233149ee07eb93a0edf8d9a07e28423c1045e3c62dd29f8c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "93f2f63f8b41e1ea70ea609d82c4e88ef7d55f860ba0229cb0b8972ef4877db8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2017-11-13T11:44:37Z",
    "title_canon_sha256": "9f87fa93885552bea4dfa95de0f6fd62cfd602478d9a8a210e810faf8b029b5d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.04535",
    "kind": "arxiv",
    "version": 3
  }
}