Pith Number

pith:EF4AQY5C

pith:2018:EF4AQY5CZH4SZRMCUAKUUKMOPG

not attested not anchored not stored refs pending

A median approach to differentiation bases

Juha Kinnunen, Toni Heikkinen

arxiv:1807.01530 v1 · 2018-07-04 · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EF4AQY5CZH4SZRMCUAKUUKMOPG}

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	2026-05-18T00:11:29.522213Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

21780863a2c9f92cc582a0154a298e799d1ac196ea114e42767330376c6a2c72

Aliases

arxiv: 1807.01530 · arxiv_version: 1807.01530v1 · doi: 10.48550/arxiv.1807.01530 · pith_short_12: EF4AQY5CZH4S · pith_short_16: EF4AQY5CZH4SZRMC · pith_short_8: EF4AQY5C

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/EF4AQY5CZH4SZRMCUAKUUKMOPG \
  | 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: 21780863a2c9f92cc582a0154a298e799d1ac196ea114e42767330376c6a2c72

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "406fb0ad3446c3434062b2b97d018b42d5c575c345a17dde20490e939d1bebbc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2018-07-04T12:06:00Z",
    "title_canon_sha256": "e4e7ae2326cd1cfdf823fabba71d0591e645f64c1fc81a2c07be653878f3f068"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.01530",
    "kind": "arxiv",
    "version": 1
  }
}