Pith Number

pith:HSAVMKUN

pith:2015:HSAVMKUNRLRZBZK7W5TXSB4RHM

not attested not anchored not stored refs pending

Constructing the Propositional Truncation using Non-recursive HITs

Floris van Doorn

arxiv:1512.02274 v1 · 2015-12-07 · 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{HSAVMKUNRLRZBZK7W5TXSB4RHM}

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.

Cited by

1 paper in Pith

Classifying Types

Receipt and verification

First computed	2026-05-18T01:24:45.106403Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c81562a8d8ae390e55fb7677907913b07e772aef6ae749a8db87184d7b970fb

Aliases

arxiv: 1512.02274 · arxiv_version: 1512.02274v1 · doi: 10.48550/arxiv.1512.02274 · pith_short_12: HSAVMKUNRLRZ · pith_short_16: HSAVMKUNRLRZBZK7 · pith_short_8: HSAVMKUN

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/HSAVMKUNRLRZBZK7W5TXSB4RHM \
  | 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: 3c81562a8d8ae390e55fb7677907913b07e772aef6ae749a8db87184d7b970fb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c1757db105d782900491734265106e6b1ede43b37d89ca88d9c4be83b7ce2b8e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2015-12-07T22:42:40Z",
    "title_canon_sha256": "db70f85508a829b79fb3f10a488a7a76879d5781866204246d1df98936a9a3ea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.02274",
    "kind": "arxiv",
    "version": 1
  }
}