Pith Number

pith:EZMVXTGA

pith:2017:EZMVXTGAWLS55PZWF7RDIYK3J5

not attested not anchored not stored refs pending

Simple connectedness of Fano log pairs with semi-log canonical singularities

Osamu Fujino, Wenfei Liu

arxiv:1712.03417 v1 · 2017-12-09 · 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{EZMVXTGAWLS55PZWF7RDIYK3J5}

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	2026-05-18T00:28:21.309394Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

26595bccc0b2e5debf362fe234615b4f7e9621afde4229ab6cbcaa3f48f179bd

Aliases

arxiv: 1712.03417 · arxiv_version: 1712.03417v1 · doi: 10.48550/arxiv.1712.03417 · pith_short_12: EZMVXTGAWLS5 · pith_short_16: EZMVXTGAWLS55PZW · pith_short_8: EZMVXTGA

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/EZMVXTGAWLS55PZWF7RDIYK3J5 \
  | 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: 26595bccc0b2e5debf362fe234615b4f7e9621afde4229ab6cbcaa3f48f179bd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "35fe759d8cec4196d86b7684395d023c8a7fe73b1999dce3b6bf06f1afe74237",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2017-12-09T17:51:01Z",
    "title_canon_sha256": "a1e323dc9269a8a4074a917194abc15b98cbb7373dd7be3580b95ebc9a52eba5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.03417",
    "kind": "arxiv",
    "version": 1
  }
}