Pith Number

pith:DFAS7JQ4

pith:2015:DFAS7JQ4MJXRIUQ3ET5EUK4BIV

not attested not anchored not stored refs pending

Restrictions on Forcings That Change Cofinalities

Asaf Karagila, Yair Hayut

arxiv:1502.02165 v2 · 2015-02-07 · 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{DFAS7JQ4MJXRIUQ3ET5EUK4BIV}

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	2026-05-18T00:16:09.994876Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

19412fa61c626f14521b24fa4a2b81457de1e45f11bb1bd3707dade804f9155f

Aliases

arxiv: 1502.02165 · arxiv_version: 1502.02165v2 · doi: 10.48550/arxiv.1502.02165 · pith_short_12: DFAS7JQ4MJXR · pith_short_16: DFAS7JQ4MJXRIUQ3 · pith_short_8: DFAS7JQ4

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/DFAS7JQ4MJXRIUQ3ET5EUK4BIV \
  | 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: 19412fa61c626f14521b24fa4a2b81457de1e45f11bb1bd3707dade804f9155f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "50159c57bfeede297de40704b6ab392c918d8915563aeac63785234b7f7c412a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2015-02-07T17:28:39Z",
    "title_canon_sha256": "6c62718064f3f9488fc3d7f5273ef378ccbf25b7d0a23f9864c74b9573893bdc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.02165",
    "kind": "arxiv",
    "version": 2
  }
}