Pith Number

pith:ZEFVGIPU

pith:2019:ZEFVGIPUBEI2CRITFSCKYCN5LE

not attested not anchored not stored refs pending

Chow groups and pseudoeffective cones of complexity one $T$-varieties

Bernt Ivar Utst{\o}l N{\o}dland

arxiv:1907.10941 v1 · 2019-07-25 · 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{ZEFVGIPUBEI2CRITFSCKYCN5LE}

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	2026-05-17T23:39:33.989615Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c90b5321f40911a145132c84ac09bd59145f3d499e2fcad691c07d505f70b708

Aliases

arxiv: 1907.10941 · arxiv_version: 1907.10941v1 · doi: 10.48550/arxiv.1907.10941 · pith_short_12: ZEFVGIPUBEI2 · pith_short_16: ZEFVGIPUBEI2CRIT · pith_short_8: ZEFVGIPU

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/ZEFVGIPUBEI2CRITFSCKYCN5LE \
  | 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: c90b5321f40911a145132c84ac09bd59145f3d499e2fcad691c07d505f70b708

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "04d2af26bd611d7b92ee585980fb827858573ce3ecfe2c41690d72f9a1a3cdb4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-07-25T10:06:51Z",
    "title_canon_sha256": "bc0c1b143b53040b541b3ef29a7d4858797b2b31cbd3dc3bf17e5dcb83fac370"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.10941",
    "kind": "arxiv",
    "version": 1
  }
}