Inflation is not a general rise in the prices of goods; prices going up is merely one symptom of inflation. Inflation is the expansion of the monetary base. Printing dollars, for example, is inflation. The increase in prices is a result of inflation, and there are numerous effects other than prices going up.
It's critical in economics to separate supply & demand of goods causing increases or decreases in prices, from monetary changes. Free market forces are not the same as central bank forces.
There's about 200 years of modern economic evidence for how exactly inflation works and how central banks create it.
I'll ignore the fact that the Fed has openly admitted it has devalued the dollar by 97% since its founding. I'll also ignore the fact that Bernanke recently said it was the goal of the Fed to generate asset inflation via QE aka debasing the dollar (see real estate skyrocketing 10% again, or 22% in Phoenix (a disaster market recently), see stocks at all time highs again ala 2007).
I'll also ignore the fact that Greenspan openly admitted the Fed has the direct ability to increase or decrease inflation, and can cause bubbles or pop them. He of all people should know.
It's not an assertion, it's a fact supported by extreme amounts of data.
If you increase the monetary base and money supply by hundreds of percent over a relatively short period of time, you're going to see a substantial increase in the price of goods in the currency in question.
If you 'print' dollars to buy trillions in mortgages and remove them from the market, you're going to limit supply of housing and cause approximately $3 to $4 trillion worth of inflation in just one year (what's happening right now). Not to mention simultaneously holding down mortgage rates via the government dominated mortgage market, by holding short term and long term interest rates artificially low by buying the paper that influences that. Then when consumers sell their homes, or take home equity loans, and then spend in any manner or buy anything else or loan their money to banks - the inflation gets discharged directly into the economy. This is one simple example, there are countless.
If today you have one trillion dollars, and tomorrow the Fed prints another trillion dollars, it's obvious what happens.
So not only do I have vast empirical economic proof not only do I have historical evidence for how it all works, not only do I have obvious math theory that is as simple as addition and subtraction, but I have the Fed openly admitting the scale of the inflation it has caused.
How many proof articles would you like on the topic?