Pith Number

pith:FUR5MHC4

pith:2019:FUR5MHC4CK7Q4RYGV2TWMTCYSD

not attested not anchored not stored refs pending

Representability and Compactness for Pseudopowers

Todd Eisworth

arxiv:1906.09307 v1 · 2019-06-21 · 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{FUR5MHC4CK7Q4RYGV2TWMTCYSD}

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	2026-05-17T23:42:38.564905Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d23d61c5c12bf0e4706aea7664c5890dab82159e3a9ebcdbe5ef18eb08a4ef6

Aliases

arxiv: 1906.09307 · arxiv_version: 1906.09307v1 · doi: 10.48550/arxiv.1906.09307 · pith_short_12: FUR5MHC4CK7Q · pith_short_16: FUR5MHC4CK7Q4RYG · pith_short_8: FUR5MHC4

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/FUR5MHC4CK7Q4RYGV2TWMTCYSD \
  | 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: 2d23d61c5c12bf0e4706aea7664c5890dab82159e3a9ebcdbe5ef18eb08a4ef6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a8fc53e9c1f846ad481415c0f6441df7821f4a970d598785a910a45b44f1bb7d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2019-06-21T20:06:50Z",
    "title_canon_sha256": "e48b2f25f2a6daecc8e630461f8bbd4db18f91c216039059d2299f0b2dd220b0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.09307",
    "kind": "arxiv",
    "version": 1
  }
}