Pith Number

pith:HSI6AGPU

pith:2017:HSI6AGPUU5IRCPSGJF7Z2A6CB5

not attested not anchored not stored refs pending

Shepherdson's theorems for fragments of open induction

Jana Glivick\'a, Petr Glivick\'y

arxiv:1701.02001 v1 · 2017-01-08 · math.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{HSI6AGPUU5IRCPSGJF7Z2A6CB5}

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	2026-05-18T00:53:12.857807Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c91e019f4a751113e46497f9d03c20f50b523bad5cd0f7616e78d204c9ad12c

Aliases

arxiv: 1701.02001 · arxiv_version: 1701.02001v1 · doi: 10.48550/arxiv.1701.02001 · pith_short_12: HSI6AGPUU5IR · pith_short_16: HSI6AGPUU5IRCPSG · pith_short_8: HSI6AGPU

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/HSI6AGPUU5IRCPSGJF7Z2A6CB5 \
  | 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: 3c91e019f4a751113e46497f9d03c20f50b523bad5cd0f7616e78d204c9ad12c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "89bb2c7b61f932430be6b2e51fe922c44824ab854b06b199be1dadf5a2081309",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2017-01-08T19:12:51Z",
    "title_canon_sha256": "9b2133e7c311fb8e2753e0054c1c7e17aef6a6a36b0e8b9ae7d415189d12296b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.02001",
    "kind": "arxiv",
    "version": 1
  }
}