Pith Number

pith:J53Q66G3

pith:2013:J53Q66G3F6QROXJMX2G4ELYSCS

not attested not anchored not stored refs pending

Quasi-decidability of a Fragment of the First-order Theory of Real Numbers

Peter Franek, Piotr Zgliczynski, Stefan Ratschan

arxiv:1309.6280 v5 · 2013-09-24 · cs.CC · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{J53Q66G3F6QROXJMX2G4ELYSCS}

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	2026-05-18T01:09:11.990460Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4f770f78db2fa1175d2cbe8dc22f12149d83e15a501610f1c76753a78b91d891

Aliases

arxiv: 1309.6280 · arxiv_version: 1309.6280v5 · doi: 10.48550/arxiv.1309.6280 · pith_short_12: J53Q66G3F6QR · pith_short_16: J53Q66G3F6QROXJM · pith_short_8: J53Q66G3

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/J53Q66G3F6QROXJMX2G4ELYSCS \
  | 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: 4f770f78db2fa1175d2cbe8dc22f12149d83e15a501610f1c76753a78b91d891

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4b9811c69e98bd5776529ccba04fc3493d6a73bcc6ccfe2677c5f92c33634839",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2013-09-24T18:30:54Z",
    "title_canon_sha256": "682af5994855d1731972b8f29eb2c0e278c42a287d344c0186973bdc6a6d5d47"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.6280",
    "kind": "arxiv",
    "version": 5
  }
}