Pith Number

pith:G7DEKAB4

pith:1995:G7DEKAB43VGP23EOTOTOG7FQQW

not attested not anchored not stored refs pending

Twistor theory, complex homogeneous manifolds and $G$-structures

Sergey A. Merkulov

arxiv:dg-ga/9502006 v1 · 1995-02-16 · dg-ga · 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{G7DEKAB43VGP23EOTOTOG7FQQW}

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	2026-05-18T01:06:48.696035Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

37c645003cdd4cfd6c8e9ba6e37cb085ad345bd149e17ed264477908c5f3faed

Aliases

arxiv: dg-ga/9502006 · arxiv_version: dg-ga/9502006v1 · doi: 10.48550/arxiv.dg-ga/9502006 · pith_short_12: G7DEKAB43VGP · pith_short_16: G7DEKAB43VGP23EO · pith_short_8: G7DEKAB4

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/G7DEKAB43VGP23EOTOTOG7FQQW \
  | 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: 37c645003cdd4cfd6c8e9ba6e37cb085ad345bd149e17ed264477908c5f3faed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "458c44a1adc5e86287acd39a998c2e2c5c29cbb370304deb33ca890f3061e5e3",
    "cross_cats_sorted": [
      "math.DG"
    ],
    "license": "",
    "primary_cat": "dg-ga",
    "submitted_at": "1995-02-16T13:48:30Z",
    "title_canon_sha256": "5742c91c6e1d9e1dd64a02b1f303ce7f0e0d9cfc459d63f57b53bd91a1f06530"
  },
  "schema_version": "1.0",
  "source": {
    "id": "dg-ga/9502006",
    "kind": "arxiv",
    "version": 1
  }
}