Pith Number

pith:EIBPC5XC

pith:2018:EIBPC5XCUPPWXLNKGBBE5KQU43

not attested not anchored not stored refs pending

Preserving Dependent Choice

Asaf Karagila

arxiv:1810.11301 v3 · 2018-10-26 · 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{EIBPC5XCUPPWXLNKGBBE5KQU43}

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	2026-05-17T23:46:41.474585Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2202f176e2a3df6badaa30424eaa14e6e3932098f2c46bb9a5c97c2175d3fd73

Aliases

arxiv: 1810.11301 · arxiv_version: 1810.11301v3 · doi: 10.48550/arxiv.1810.11301 · pith_short_12: EIBPC5XCUPPW · pith_short_16: EIBPC5XCUPPWXLNK · pith_short_8: EIBPC5XC

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/EIBPC5XCUPPWXLNKGBBE5KQU43 \
  | 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: 2202f176e2a3df6badaa30424eaa14e6e3932098f2c46bb9a5c97c2175d3fd73

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "901e4e267bfc7da91e4f81e6edce533220bf3b8a42129da03bd3128944340bcf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2018-10-26T12:57:42Z",
    "title_canon_sha256": "491d5020a871c0d3002e9942312f4b0848426099ba3be34dd3e9f6a8b8a320ff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.11301",
    "kind": "arxiv",
    "version": 3
  }
}