Pith Number

pith:CICBAFVF

pith:2017:CICBAFVFAQAVRGGWT57VCKJBO3

not attested not anchored not stored refs pending

On the impossibility of constructing a triangle given its internal bisectors

Alberto Maia, Antonio Caminha

arxiv:1706.08508 v1 · 2017-06-21 · 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{CICBAFVFAQAVRGGWT57VCKJBO3}

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	2026-05-18T00:41:42.440031Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

12041016a504015898d69f7f51292176ff76c3bdad4c53fcbc36d946b14d09f9

Aliases

arxiv: 1706.08508 · arxiv_version: 1706.08508v1 · doi: 10.48550/arxiv.1706.08508 · pith_short_12: CICBAFVFAQAV · pith_short_16: CICBAFVFAQAVRGGW · pith_short_8: CICBAFVF

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/CICBAFVFAQAVRGGWT57VCKJBO3 \
  | 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: 12041016a504015898d69f7f51292176ff76c3bdad4c53fcbc36d946b14d09f9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "719ff3719a906385a52990157dd9e20c3f7f319b1ee564528568584f6c990abf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2017-06-21T23:15:28Z",
    "title_canon_sha256": "947c3a2eeea668ad33379ef453916c991aee99b6d5dbc2966c27d2a68ab2c46b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.08508",
    "kind": "arxiv",
    "version": 1
  }
}