Pith Number

pith:UMKQUBDV

pith:2017:UMKQUBDV2RBCCBJ5YGHFZS72A6

not attested not anchored not stored refs pending

A Poincar\'e Covariant Noncommutative Spacetime?

Albert Much, Jos\'e David Vergara

arxiv:1704.07932 v1 · 2017-04-25 · math-ph · hep-th · math.MP · quant-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UMKQUBDV2RBCCBJ5YGHFZS72A6}

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	2026-05-18T00:07:12.224020Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3150a0475d44221053dc18e5ccbfa078c70e512918156d4d433e41f600e805c

Aliases

arxiv: 1704.07932 · arxiv_version: 1704.07932v1 · doi: 10.48550/arxiv.1704.07932 · pith_short_12: UMKQUBDV2RBC · pith_short_16: UMKQUBDV2RBCCBJ5 · pith_short_8: UMKQUBDV

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/UMKQUBDV2RBCCBJ5YGHFZS72A6 \
  | 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: a3150a0475d44221053dc18e5ccbfa078c70e512918156d4d433e41f600e805c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "03c68bbfb5838a2fff2da16075e731e32a604d13aee075e53aba769075b526bd",
    "cross_cats_sorted": [
      "hep-th",
      "math.MP",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2017-04-25T23:36:58Z",
    "title_canon_sha256": "43e74e5f2356c02f62ca0ae2f9e7848e43fdf6bf716953ee20a43199f4020f6b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.07932",
    "kind": "arxiv",
    "version": 1
  }
}