Pith Number

pith:SKFM73VT

pith:2019:SKFM73VTFTHOPGCN3FGTREH6YB

not attested not anchored not stored refs pending

Decouplings for Surfaces of Zero Curvature

Dominique Kemp

arxiv:1908.07002 v2 · 2019-08-19 · math.CA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SKFM73VTFTHOPGCN3FGTREH6YB}

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	2026-07-05T00:39:13.454114Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

928acfeeb32ccee7984dd94d3890fec04fe773a48298eb346bd302875698fed4

Aliases

arxiv: 1908.07002 · arxiv_version: 1908.07002v2 · doi: 10.48550/arxiv.1908.07002 · pith_short_12: SKFM73VTFTHO · pith_short_16: SKFM73VTFTHOPGCN · pith_short_8: SKFM73VT

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/SKFM73VTFTHOPGCN3FGTREH6YB \
  | 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: 928acfeeb32ccee7984dd94d3890fec04fe773a48298eb346bd302875698fed4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4b276dca2faefdb297d168b5abbc1021f4f7138710d8e355bce689806546c583",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2019-08-19T18:04:13Z",
    "title_canon_sha256": "4f7de954551e7a8c8dacb0259529cca4979608ea899bd9a406bdf2682a6e138c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.07002",
    "kind": "arxiv",
    "version": 2
  }
}