Pith Number

pith:EUBWS4K5

pith:2017:EUBWS4K56WCKQLR24HJ3GSYTHU

not attested not anchored not stored refs pending

On semipositivity theorems

Osamu Fujino, Taro Fujisawa

arxiv:1701.02039 v2 · 2017-01-08 · 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{EUBWS4K56WCKQLR24HJ3GSYTHU}

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	2026-05-18T00:30:55.323697Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

250369715df584a82e3ae1d3b34b133d2b3eaec1fe948de375d93f09b9974dc7

Aliases

arxiv: 1701.02039 · arxiv_version: 1701.02039v2 · doi: 10.48550/arxiv.1701.02039 · pith_short_12: EUBWS4K56WCK · pith_short_16: EUBWS4K56WCKQLR2 · pith_short_8: EUBWS4K5

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/EUBWS4K56WCKQLR24HJ3GSYTHU \
  | 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: 250369715df584a82e3ae1d3b34b133d2b3eaec1fe948de375d93f09b9974dc7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7d143eaa59ef2afa111c940328fdbb0b14ec97524c9c7a2605bd2c18d727d661",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2017-01-08T23:47:10Z",
    "title_canon_sha256": "74b53d2b6a31c3d51a24274bf3337cb438568fa73bafc458b7483ee09ba85d31"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.02039",
    "kind": "arxiv",
    "version": 2
  }
}