Pith Number

pith:2DGP5PDS

pith:2017:2DGP5PDSDAEHYNIT4IVQT65SYL

not attested not anchored not stored refs pending

Recognizing difference quotients of real functions

Jimmy Yau, Trevor Richards

arxiv:1706.02351 v1 · 2017-05-23 · math.CA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2DGP5PDSDAEHYNIT4IVQT65SYL}

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	2026-05-18T00:42:45.691178Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d0ccfebc7218087c3513e22b09fbb2c2ca5cf43dce92b3e8ef6f0130374aa5ec

Aliases

arxiv: 1706.02351 · arxiv_version: 1706.02351v1 · doi: 10.48550/arxiv.1706.02351 · pith_short_12: 2DGP5PDSDAEH · pith_short_16: 2DGP5PDSDAEHYNIT · pith_short_8: 2DGP5PDS

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/2DGP5PDSDAEHYNIT4IVQT65SYL \
  | 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: d0ccfebc7218087c3513e22b09fbb2c2ca5cf43dce92b3e8ef6f0130374aa5ec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f5c7c4daca14854e1cff32052983d9ef65be061663f79b87fa92a59c3155e7b2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2017-05-23T03:47:16Z",
    "title_canon_sha256": "6d13c8d38c4ac1d5f3d80d2182615033f4fe37091a57205147904b68a0872f67"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.02351",
    "kind": "arxiv",
    "version": 1
  }
}