Pith Number

pith:AH34MQNQ

pith:2018:AH34MQNQVGYEZHFRD2PSLDH6GQ

not attested not anchored not stored refs pending

Teaching Differentiation: A Rare Case for the Problem of the Slope of the Tangent Line

Roman Kvasov

arxiv:1805.00343 v1 · 2018-04-29 · 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{AH34MQNQVGYEZHFRD2PSLDH6GQ}

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	2026-05-18T00:17:09.844600Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

01f7c641b0a9b04c9cb11e9f258cfe3436f15d80bb11ff1def521cd32c60652b

Aliases

arxiv: 1805.00343 · arxiv_version: 1805.00343v1 · doi: 10.48550/arxiv.1805.00343 · pith_short_12: AH34MQNQVGYE · pith_short_16: AH34MQNQVGYEZHFR · pith_short_8: AH34MQNQ

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/AH34MQNQVGYEZHFRD2PSLDH6GQ \
  | 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: 01f7c641b0a9b04c9cb11e9f258cfe3436f15d80bb11ff1def521cd32c60652b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee15f079dcd93d0524af776c516e2419d7ffa9e8e5b15473a7c664221c77f1e4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2018-04-29T23:18:49Z",
    "title_canon_sha256": "d7252b82c74b9d9edf2a1b7855de743888a3340283074b3c87146120e44561a2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.00343",
    "kind": "arxiv",
    "version": 1
  }
}