Pith Number

pith:IUUFQ5PA

pith:2021:IUUFQ5PAZNREZK5G3S2L4UQPOU

not attested not anchored not stored refs pending

Hamiltonian formulation of an effective modified gravity with nondynamical background fields

Carlos M. Reyes, Marco Schreck

arxiv:2105.05954 v1 · 2021-05-12 · gr-qc · hep-ph · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IUUFQ5PAZNREZK5G3S2L4UQPOU}

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	2026-07-05T03:45:32.211352Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

45285875e0cb624caba6dcb4be520f7519d59b3cf6c49d0a92b9ff05bedef274

Aliases

arxiv: 2105.05954 · arxiv_version: 2105.05954v1 · doi: 10.48550/arxiv.2105.05954 · pith_short_12: IUUFQ5PAZNRE · pith_short_16: IUUFQ5PAZNREZK5G · pith_short_8: IUUFQ5PA

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/IUUFQ5PAZNREZK5G3S2L4UQPOU \
  | 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: 45285875e0cb624caba6dcb4be520f7519d59b3cf6c49d0a92b9ff05bedef274

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8ccf0b6ae5cd98f576abd6698a493bf2bde88c63064334971bd2c59e8cf6dafe",
    "cross_cats_sorted": [
      "hep-ph",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2021-05-12T20:30:37Z",
    "title_canon_sha256": "10936f7dd0f2759eaf745c5d90a0f4d39d0268fcbd7f6e54b9b2bb286a4f291e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.05954",
    "kind": "arxiv",
    "version": 1
  }
}