Pith Number

pith:SKPT4TK2

pith:2018:SKPT4TK2PZX224BL5P76MNYBZK

not attested not anchored not stored refs pending

Einstein warped G2 and Spin(7) manifolds

Luis Ugarte, Victor Manero

arxiv:1805.05858 v1 · 2018-05-15 · 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{SKPT4TK2PZX224BL5P76MNYBZK}

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	2026-05-17T23:50:28.000407Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

929f3e4d5a7e6fad702bebffe63701ca9d1c262bc0d51f9af496d00cffd7eb05

Aliases

arxiv: 1805.05858 · arxiv_version: 1805.05858v1 · doi: 10.48550/arxiv.1805.05858 · pith_short_12: SKPT4TK2PZX2 · pith_short_16: SKPT4TK2PZX224BL · pith_short_8: SKPT4TK2

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/SKPT4TK2PZX224BL5P76MNYBZK \
  | 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: 929f3e4d5a7e6fad702bebffe63701ca9d1c262bc0d51f9af496d00cffd7eb05

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2b046cca1f247bc9437a56a2d8d18096839306786a9f81d0887ae879ca6ad1ae",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2018-05-15T15:41:41Z",
    "title_canon_sha256": "d17d7279880829662c1a2d6699b51de0bea914fb9e159bb8c2bbb97bc025f2a6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.05858",
    "kind": "arxiv",
    "version": 1
  }
}