Pith Number

pith:IYFTSWTB

pith:2016:IYFTSWTBDMCP3V44MWCIFL47NJ

not attested not anchored not stored refs pending

Sobolev Algebra Counterexamples

Luke G. Rogers, Thierry Coulhon

arxiv:1605.04209 v1 · 2016-05-13 · math.FA

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

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	2026-05-18T01:14:54.015518Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

460b395a611b04fdd79c658482af9f6a6aa9104705840b42da4511598fbe6654

Aliases

arxiv: 1605.04209 · arxiv_version: 1605.04209v1 · doi: 10.48550/arxiv.1605.04209 · pith_short_12: IYFTSWTBDMCP · pith_short_16: IYFTSWTBDMCP3V44 · pith_short_8: IYFTSWTB

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/IYFTSWTBDMCP3V44MWCIFL47NJ \
  | 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: 460b395a611b04fdd79c658482af9f6a6aa9104705840b42da4511598fbe6654

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0da9d08fd94dbb8633a3a0d3fee9ff1242606f7a02fedf727a2f6e92c5356b4f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2016-05-13T15:19:16Z",
    "title_canon_sha256": "aa5cfdcad08863c6caa6359b468fc378adbddda59fd0f0a8e1fe12b268cf70ea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.04209",
    "kind": "arxiv",
    "version": 1
  }
}