Pith Number

pith:YAXPNDHI

pith:2017:YAXPNDHIXCPGYNJ2UYCLM4RTBO

not attested not anchored not stored refs pending

Generalised contact geometry as reduced generalised complex geometry

Kyle Wright

arxiv:1708.09550 v2 · 2017-08-31 · math.DG · math-ph · math.MP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YAXPNDHIXCPGYNJ2UYCLM4RTBO}

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	2026-05-18T00:15:10.251096Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c02ef68ce8b89e6c353aa604b672330b9f453033ab2b71c508b476e6b1c3443b

Aliases

arxiv: 1708.09550 · arxiv_version: 1708.09550v2 · doi: 10.48550/arxiv.1708.09550 · pith_short_12: YAXPNDHIXCPG · pith_short_16: YAXPNDHIXCPGYNJ2 · pith_short_8: YAXPNDHI

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/YAXPNDHIXCPGYNJ2UYCLM4RTBO \
  | 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: c02ef68ce8b89e6c353aa604b672330b9f453033ab2b71c508b476e6b1c3443b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5a87699118c5bc650b71d8dd74fc12afe66daaf106e7ca0dc2d7020103b43cde",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2017-08-31T03:43:53Z",
    "title_canon_sha256": "7b584bcaf5aa1906bef8c0dbb61c4816cc8695801048c7122000b3c97088d5d1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.09550",
    "kind": "arxiv",
    "version": 2
  }
}