Pith Number

pith:VAPWKBDE

pith:2018:VAPWKBDEDKBBS37EFDVL5V4RD4

not attested not anchored not stored refs pending

Effective delta sources and regularity in higher-derivative and ghost-free gravity

Breno L. Giacchini, Tib\'erio de Paula Netto

arxiv:1809.05907 v2 · 2018-09-16 · gr-qc · 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{VAPWKBDEDKBBS37EFDVL5V4RD4}

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	2026-05-17T23:41:17.870215Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a81f6504641a82196fe428eabed7911f26ac8f4a810d0823f2c0c635adc7411e

Aliases

arxiv: 1809.05907 · arxiv_version: 1809.05907v2 · doi: 10.48550/arxiv.1809.05907 · pith_short_12: VAPWKBDEDKBB · pith_short_16: VAPWKBDEDKBBS37E · pith_short_8: VAPWKBDE

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/VAPWKBDEDKBBS37EFDVL5V4RD4 \
  | 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: a81f6504641a82196fe428eabed7911f26ac8f4a810d0823f2c0c635adc7411e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2405ba1130415ed4ff2d43cf87136ea1651e665288d7d221f9545acc0a2592d3",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2018-09-16T16:21:18Z",
    "title_canon_sha256": "9a11400be8a5828ec79e19558bdc1be32f3c44079e91df9c72237d04c7a0fbc2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.05907",
    "kind": "arxiv",
    "version": 2
  }
}