Pith Number

pith:SMSC4XKE

pith:2014:SMSC4XKE4V3ICZCZQRLXZC2OVQ

not attested not anchored not stored refs pending

ApSimon's Mint Problem with Three or More Weighings

Richard J. Mathar

arxiv:1407.3613 v1 · 2014-07-14 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SMSC4XKE4V3ICZCZQRLXZC2OVQ}

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	2026-05-18T02:47:42.349561Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93242e5d44e57681645984577c8b4eac0b005ecc89971157403ecab71ac7d17b

Aliases

arxiv: 1407.3613 · arxiv_version: 1407.3613v1 · doi: 10.48550/arxiv.1407.3613 · pith_short_12: SMSC4XKE4V3I · pith_short_16: SMSC4XKE4V3ICZCZ · pith_short_8: SMSC4XKE

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/SMSC4XKE4V3ICZCZQRLXZC2OVQ \
  | 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: 93242e5d44e57681645984577c8b4eac0b005ecc89971157403ecab71ac7d17b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bda6087d23363b13b5b04e19f06d76b89e74fb3c7e2606178983f39ce0a87656",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2014-07-14T11:54:17Z",
    "title_canon_sha256": "0bc471b05428640f618746d0005d8ecde33f2bd463b4d7af2939eb27ab06544e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.3613",
    "kind": "arxiv",
    "version": 1
  }
}