Pith Number

pith:TXUAZ3FE

pith:2018:TXUAZ3FEL34IS2EJGVA2TZ4CIP

not attested not anchored not stored refs pending

On projective varieties with strictly nef tangent bundles

Duo Li, Wenhao Ou, Xiaokui Yang

arxiv:1801.09191 v2 · 2018-01-28 · math.AG · math.DG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TXUAZ3FEL34IS2EJGVA2TZ4CIP}

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	2026-05-17T23:59:43.850101Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9de80ceca45ef88968893541a9e78243e84c58dcfc5093e19a78059aaaa406c5

Aliases

arxiv: 1801.09191 · arxiv_version: 1801.09191v2 · doi: 10.48550/arxiv.1801.09191 · pith_short_12: TXUAZ3FEL34I · pith_short_16: TXUAZ3FEL34IS2EJ · pith_short_8: TXUAZ3FE

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/TXUAZ3FEL34IS2EJGVA2TZ4CIP \
  | 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: 9de80ceca45ef88968893541a9e78243e84c58dcfc5093e19a78059aaaa406c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "63de967ee77fbd2f3fa883b857ce7bfaf29a022bef09610ae2a8fb237ebf8ff1",
    "cross_cats_sorted": [
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2018-01-28T07:07:19Z",
    "title_canon_sha256": "4d50bed9d9c0dfe7d8a37f52e0db32ebda676a226dd65b44671d70cc513cb363"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.09191",
    "kind": "arxiv",
    "version": 2
  }
}