Pith Number

pith:6ACV6VUY

pith:2021:6ACV6VUYCOJLVN7GHEYGJMLAM6

not attested not anchored not stored refs pending

Quantization of constrained systems as Dirac first class versus second class: a toy model and its implications

Abraham Tan, Chopin Soo, Eyo Eyo Ita III

arxiv:2108.13210 v1 · 2021-08-27 · quant-ph · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6ACV6VUYCOJLVN7GHEYGJMLAM6}

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	2026-07-05T03:09:51.066087Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f0055f56981392bab7e6393064b16067a6d0b07eba503aaea1eef31597c686a2

Aliases

arxiv: 2108.13210 · arxiv_version: 2108.13210v1 · doi: 10.48550/arxiv.2108.13210 · pith_short_12: 6ACV6VUYCOJL · pith_short_16: 6ACV6VUYCOJLVN7G · pith_short_8: 6ACV6VUY

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/6ACV6VUYCOJLVN7GHEYGJMLAM6 \
  | 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: f0055f56981392bab7e6393064b16067a6d0b07eba503aaea1eef31597c686a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fc1129ccb853a25f577844584049c93585e632bc422b04ce3c193f1520148860",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2021-08-27T13:24:35Z",
    "title_canon_sha256": "9e3f1f2a36357acd19111fc17e7a4044d9de57dff274be5cb213a32d682b2f3d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2108.13210",
    "kind": "arxiv",
    "version": 1
  }
}