Pith Number
pith:PXPQ2WJO
pith:2008:PXPQ2WJOA5ARXRB4FZLRF6B7VF
not attested
not anchored
not stored
refs pending
f(R) Theories Of Gravity
arxiv:0805.1726 v4 · 2008-05-12 · gr-qc · astro-ph · hep-th
Add to your LaTeX paper
\usepackage{pith}
\pithnumber{PXPQ2WJOA5ARXRB4FZLRF6B7VF}
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
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claim
4
Citations
5
Replications
✓
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
Receipt and verification
| First computed | 2026-05-18T02:35:22.508991Z |
|---|---|
| Builder | pith-number-builder-2026-05-17-v1 |
| Signature | Pith Ed25519
(pith-v1-2026-05) · public key |
| Schema | pith-number/v1.0 |
Canonical hash
7ddf0d592e07411bc43c2e5712f83fa967bea0049f569190d4b352d0d32735e2
Aliases
· · · · ·Agent API
Verify this Pith Number yourself
curl -sH 'Accept: application/ld+json' https://pith.science/pith/PXPQ2WJOA5ARXRB4FZLRF6B7VF \
| 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: 7ddf0d592e07411bc43c2e5712f83fa967bea0049f569190d4b352d0d32735e2
Canonical record JSON
{
"metadata": {
"abstract_canon_sha256": "161f670e3cb6c685f2d3fb6e8a33d84582e87591b5f01bef180f5aea86848432",
"cross_cats_sorted": [
"astro-ph",
"hep-th"
],
"license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
"primary_cat": "gr-qc",
"submitted_at": "2008-05-12T19:44:15Z",
"title_canon_sha256": "2ea4aef26626720227fbfafbcb688298e3c8132302b02b0a775d0ed7c2a70418"
},
"schema_version": "1.0",
"source": {
"id": "0805.1726",
"kind": "arxiv",
"version": 4
}
}