Pith Number

pith:VXWQURHS

pith:2021:VXWQURHSUZHMYXJXBTHMAMKXSC

not attested not anchored not stored refs pending

Cosmological evolution with quadratic gravity and nonideal fluids

Daniele Gregoris, Saikat Chakraborty

arxiv:2103.07718 v3 · 2021-03-13 · 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{VXWQURHSUZHMYXJXBTHMAMKXSC}

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.

Cited by

1 paper in Pith

Thermodynamics of FLRW universe in Quadratic Gravity

Receipt and verification

First computed	2026-07-05T03:25:30.657449Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aded0a44f2a64ecc5d370ccec0315790b04929ef9917f696e72cd86fccfd1e89

Aliases

arxiv: 2103.07718 · arxiv_version: 2103.07718v3 · doi: 10.48550/arxiv.2103.07718 · pith_short_12: VXWQURHSUZHM · pith_short_16: VXWQURHSUZHMYXJX · pith_short_8: VXWQURHS

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/VXWQURHSUZHMYXJXBTHMAMKXSC \
  | 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: aded0a44f2a64ecc5d370ccec0315790b04929ef9917f696e72cd86fccfd1e89

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8951f305214743f6b10314280227be01882ceb1b76b79d3e5698945454f64ed4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2021-03-13T13:34:22Z",
    "title_canon_sha256": "c5fca5d6e912bd1ff25919ad20708dc75ec1916181f7cddaa49ebd0187fe344d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.07718",
    "kind": "arxiv",
    "version": 3
  }
}