Pith Number

pith:4TDUZAJ3

pith:2015:4TDUZAJ3IGSLYHWB3EEMB3HESO

not attested not anchored not stored refs pending

On the history of nested intervals: from Archimedes to Cantor

Galina Sinkevich

arxiv:1508.05862 v1 · 2015-08-21 · 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{4TDUZAJ3IGSLYHWB3EEMB3HESO}

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	2026-05-18T01:34:51.517117Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4c74c813b41a4bc1ec1d908c0ece493b873514ae378043d7a416cac189363e8

Aliases

arxiv: 1508.05862 · arxiv_version: 1508.05862v1 · doi: 10.48550/arxiv.1508.05862 · pith_short_12: 4TDUZAJ3IGSL · pith_short_16: 4TDUZAJ3IGSLYHWB · pith_short_8: 4TDUZAJ3

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/4TDUZAJ3IGSLYHWB3EEMB3HESO \
  | 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: e4c74c813b41a4bc1ec1d908c0ece493b873514ae378043d7a416cac189363e8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "385bff3d714ed6c3c0f54224890ed5ea0cada595576e41a6f2f9d19b155f43b5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2015-08-21T15:14:53Z",
    "title_canon_sha256": "31303df42f5f390ef2f5bcdcac9429d790ae3f57bdf7965a1741be1c484be25f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.05862",
    "kind": "arxiv",
    "version": 1
  }
}