Pith Number

pith:BXYFSY6X

pith:2016:BXYFSY6X75UUYPVKN2ONDUMU7W

not attested not anchored not stored refs pending

Purely log terminal threefolds with non-normal centres in characteristic two

Hiromu Tanaka, Paolo Cascini

arxiv:1607.08590 v2 · 2016-07-28 · 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{BXYFSY6X75UUYPVKN2ONDUMU7W}

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	2026-05-18T00:17:35.773363Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0df05963d7ff694c3eaa6e9cd1d194fd98b8f455148b1b38ae10aacf220fe625

Aliases

arxiv: 1607.08590 · arxiv_version: 1607.08590v2 · doi: 10.48550/arxiv.1607.08590 · pith_short_12: BXYFSY6X75UU · pith_short_16: BXYFSY6X75UUYPVK · pith_short_8: BXYFSY6X

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/BXYFSY6X75UUYPVKN2ONDUMU7W \
  | 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: 0df05963d7ff694c3eaa6e9cd1d194fd98b8f455148b1b38ae10aacf220fe625

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9588b2f838607831124656b6986281a0618a89e7baf0b06e7de1a4cf0c4ddd37",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2016-07-28T19:45:50Z",
    "title_canon_sha256": "c8bf2dcbd54ac5e132a28ea9e5ca5e021d4cfcd9bbea8f3c7cb695d93ec5a791"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1607.08590",
    "kind": "arxiv",
    "version": 2
  }
}