Pith Number

pith:WXVMOMGP

pith:2017:WXVMOMGPKT4BGRUZI7BNPYQ4WJ

not attested not anchored not stored refs pending

A general extension theorem for cohomology classes on non reduced analytic spaces

Jean-Pierre Demailly (IF), Junyan Cao (UPMC), Shin-ichi Matsumura

arxiv:1703.00292 v2 · 2017-03-01 · 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{WXVMOMGPKT4BGRUZI7BNPYQ4WJ}

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	2026-05-18T00:43:54.104272Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b5eac730cf54f813469947c2d7e21cb24731d7f0871bd40e418dbd0ccc0c0008

Aliases

arxiv: 1703.00292 · arxiv_version: 1703.00292v2 · doi: 10.48550/arxiv.1703.00292 · pith_short_12: WXVMOMGPKT4B · pith_short_16: WXVMOMGPKT4BGRUZ · pith_short_8: WXVMOMGP

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/WXVMOMGPKT4BGRUZI7BNPYQ4WJ \
  | 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: b5eac730cf54f813469947c2d7e21cb24731d7f0871bd40e418dbd0ccc0c0008

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fa6f23344a03a76aa74e9c5e2b85c48727b21cbbe6a524689a0e44f31c933268",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2017-03-01T13:37:51Z",
    "title_canon_sha256": "7ca825d78cf6fe22fed9e1eade73cc7f334f09368216595d204f4864c0e1b0f3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.00292",
    "kind": "arxiv",
    "version": 2
  }
}