Pith Number

pith:63XYPABB

pith:2018:63XYPABB4GA3KMEPRQTFVL7C7C

not attested not anchored not stored refs pending

On the blow-up formula of twisted de Rham cohomology

Song Yang, Youming Chen

arxiv:1810.09653 v3 · 2018-10-23 · 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{63XYPABB4GA3KMEPRQTFVL7C7C}

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	2026-05-17T23:43:33.083999Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f6ef878021e181b5308f8c265aafe2f89fd99c3712b59ad1664ab1e565dfb271

Aliases

arxiv: 1810.09653 · arxiv_version: 1810.09653v3 · doi: 10.48550/arxiv.1810.09653 · pith_short_12: 63XYPABB4GA3 · pith_short_16: 63XYPABB4GA3KMEP · pith_short_8: 63XYPABB

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/63XYPABB4GA3KMEPRQTFVL7C7C \
  | 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: f6ef878021e181b5308f8c265aafe2f89fd99c3712b59ad1664ab1e565dfb271

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fa2dfd1277f813fc77163375e2455d6425d6022e69e557fdda2da519c9005cff",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2018-10-23T04:39:00Z",
    "title_canon_sha256": "e7e64fed390ba47fe9a553970197241f9cd245b5091f120f0856599bb5edbdb8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.09653",
    "kind": "arxiv",
    "version": 3
  }
}