Pith Number

pith:UI2OLY4E

pith:2017:UI2OLY4EJ33VYJU6GDNVB5R7KG

not attested not anchored not stored refs pending

Constructing and Understanding New and Old Scales on Slide Rules

Ace Hoffman, Istvan Szalkai

arxiv:1706.04390 v1 · 2017-06-14 · math.HO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UI2OLY4EJ33VYJU6GDNVB5R7KG}

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	2026-05-18T00:42:22.795184Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a234e5e3844ef75c269e30db50f63f51b406a3f9a9c433826f012111003c3c62

Aliases

arxiv: 1706.04390 · arxiv_version: 1706.04390v1 · doi: 10.48550/arxiv.1706.04390 · pith_short_12: UI2OLY4EJ33V · pith_short_16: UI2OLY4EJ33VYJU6 · pith_short_8: UI2OLY4E

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/UI2OLY4EJ33VYJU6GDNVB5R7KG \
  | 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: a234e5e3844ef75c269e30db50f63f51b406a3f9a9c433826f012111003c3c62

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "941660e4f41bf54319e863f25f55e17399d5a2085d426a975a52bca889f7b974",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2017-06-14T10:03:13Z",
    "title_canon_sha256": "1100ad411209545d81595f45f2a749b3f1bed887b829155f215262d0e68a12db"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.04390",
    "kind": "arxiv",
    "version": 1
  }
}